Resultados totales (Incluyendo duplicados): 20
Encontrada(s) 2 página(s)
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/278282
Dataset. 2018

DATA FROM: BIOLOGICAL INVASION MODIFIES THE CO-OCCURRENCE PATTERNS OF INSECTS ALONG A STRESS GRADIENT

  • Carbonell, José Antonio
  • Velasco, Josefa
  • Millán, Andrés
  • Green, Andy J.
  • Coccia, Cristina
  • Guareschi, Simone
  • Gutiérrez-Cánovas, Cayetano
Compressed file containing 7 archives: environmental and biological data from invaded and non-invaded areas (original dataset); environmental and biological data from invaded area (to be used for data analysis along with the R script); environmental and biological data from non-invaded area (to be used for data analysis along with the R script); physiological and biological traits of corixids and their categories (to be used for data analysis along with the R script); affinity values of species for each trait category (to be used for data analysis along with the R script), physiological and biological traits of corixids and their categories (original dataset); document with detailed archives description., Biological invasions have become one of the most important drivers of biodiversity loss and ecosystem change world-wide. However, it is still unclear how invasions may interact with local abiotic stressors, which are expected to increase as global change intensifies. Furthermore, we know little about the response to biological invasions of insects, despite their disproportionate contribution to global animal biodiversity. The aim of the present work is to investigate the impact of an invasive aquatic insect on the co-occurrence patterns of native species of insects along a salinity gradient, and determine which assembly rules are driving these patterns. First, we characterised the habitat specialisation and functional niches of each species from physiological and biological traits, respectively, and their degree of overlap. Second, we used field data to compare the co-occurrence patterns of native and invasive species in invaded and non-invaded areas of southern Iberia and northern Morocco. Finally, we tested if habitat filtering or niche differentiation assembly rules mediate their co-occurrence. In non-invaded areas, habitat filtering drives habitat segregation of species along the salinity gradient, with a lower contribution of niche differentiation. The presence of the invasive insect modifies the distribution and co-occurrence patterns of native species. In invaded areas, niche differentiation seems to be the main mechanism to avoid competition among the invasive and native species, enabling coexistence and resource partitioning. The combined study of functional niche similarity and abiotic stressor tolerance of invasive and native species can improve our understanding of the effects of invasive species along abiotic stress gradients. This approach may increase our capacity to predict the outcomes of biological invasion in a global change context., Peer reviewed

Proyecto: //
DOI: http://hdl.handle.net/10261/278282
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/278282
HANDLE: http://hdl.handle.net/10261/278282
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/278282
PMID: http://hdl.handle.net/10261/278282
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/278282
Ver en: http://hdl.handle.net/10261/278282
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/278282

Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/281351
Dataset. 2018

DATA FROM: SHOREBIRDS AS IMPORTANT VECTORS FOR PLANT DISPERSAL IN EUROPE

  • Lovas-Kiss, Ádám
  • Sánchez, Marta I.
  • Wilkinson, David M.
  • Coughlan, Neil E.
  • Alves, José A.
  • Green, Andy J.
Raw data on intact seeds in shorebirds This file contains data of the faecal samples collected from the field in different locations with date, faeces sample mass, plant species name, and the number of seeds per taxon. This file was made with Microsoft Excel 2016 shorebird.xlsx, Shorebirds (Charadriiformes) undergo rapid migrations with potential for long-distance dispersal (LDD) of plants. We studied the frequency of endozoochory by shorebirds in different parts of Europe covering a broad latitudinal range and different seasons. We assessed whether plants dispersed conformed to morphological dispersal syndromes. A total of 409 excreta samples (271 faeces and 138 pellets) were collected from redshank (Tringa totanus), black-winged stilt (Himantopus himantopus), pied avocet (Recurvirostra avosetta), northern lapwing (Vanellus vanellus), Eurasian curlew (Numenius arquata) and black-tailed godwit (Limosa limosa) in south-west Spain, north-west England, southern Ireland and Iceland in 2005 and 2016, and intact seeds were extracted and identified. Godwits were sampled just before or after migratory movements between England and Iceland. The germinability of seeds was tested. Intact diaspores were recovered from all bird species and study areas, and were present in 13% of samples overall. Thirteen plant families were represented, including Charophyceae and 26 angiosperm taxa. Only four species had an "endozoochory syndrome". Four alien species were recorded. Ellenberg values classified three species as aquatic and 20 as terrestrial. Overall, 89% of seeds were from terrestrial plants, and 11% from aquatic plants. Average seed length was higher in redshank pellets than in their faeces. Six species were germinated, none of which had an endozoochory syndrome. Seeds were recorded during spring and autumn migration. Plant species recorded have broad latitudinal ranges consistent with LDD via shorebirds. Crucially, morphological syndromes do not adequately predict LDD potential, and more empirical work is required to identify which plants are dispersed by shorebirds. Incorporating endozoochory by shorebirds and other migratory waterbirds into plant distribution models would allow us to better understand the natural processes that facilitated colonization of oceanic islands, or to improve predictions of how plants will respond to climate change, or how alien species spread., Peer reviewed

Proyecto: //

CORA.Repositori de Dades de Recerca
doi:10.34810/data78
Dataset. 2021

SUPPLEMENTAL DATA OF: SPATIAL CONGRUENCE BETWEEN MULTIPLE STRESSORS IN THE MEDITERRANEAN SEA MAY REDUCE ITS RESILIENCE TO CLIMATE IMPACTS

  • Ramírez Benítez, Francisco José
  • Coll Montón, Marta
  • Navarro, Joan
  • Bustamante, Javier
  • Green, Andy J.
Maps showing all different kind of impacts on the Mediterranean Sea

Proyecto: //
DOI: https://doi.org/10.34810/data78
CORA.Repositori de Dades de Recerca
doi:10.34810/data78
HANDLE: https://doi.org/10.34810/data78
CORA.Repositori de Dades de Recerca
doi:10.34810/data78
PMID: https://doi.org/10.34810/data78
CORA.Repositori de Dades de Recerca
doi:10.34810/data78
Ver en: https://doi.org/10.34810/data78
CORA.Repositori de Dades de Recerca
doi:10.34810/data78

Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/122692
Dataset. 2015

LATITUDINAL-RELATED VARIATION IN WINTERING POPULATION TRENDS OF GREYLAG GEESE (ANSER ANSER) ALONG THE ATLANTIC FLYWAY: A RESPONSE TO CLIMATE CHANGE?[DATASET]

  • Ramo, Cristina
  • Amat, Juan A.
  • Nilsson, Leif
  • Schricke, Vincent
  • Rodríguez-Alonso, Mariano
  • Gómez-Crespo, Enrique
  • Jubete, Fernando
  • Navedo, Juan G.
  • Masero, José A.
  • Palacios, Jesús
  • Boos, Mathieu
  • Green, Andy J.
The high quality of available census data for wintering greylag geese in Europe facilitates the study of how population change varies across the Atlantic flyway and relates to global change. Files contain information of greylag geese winter counts, mean January temperatures and surface areas of the main crops used by wintering geese (1980-2009), and of the first arrival of greylag geese in autumn to the Guadalquivir marshes (1961-2012).-- et al., Peer reviewed

Proyecto: //
DOI: http://hdl.handle.net/10261/122692
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/122692
HANDLE: http://hdl.handle.net/10261/122692
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/122692
PMID: http://hdl.handle.net/10261/122692
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/122692
Ver en: http://hdl.handle.net/10261/122692
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/122692

Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/128374
Dataset. 2016

WHEN PARASITES ARE GOOD FOR HEALTH: CESTODE PARASITISM INCREASES RESISTANCE TO ARSENIC IN BRINE SHRIMPS

  • Sánchez, Marta I.
  • Pons, Inés
  • Martínez-Haro, Mónica
  • Taggart, Mark A.
  • Lenormand, Thomas
  • Green, Andy J.
LC50 tests: Naturally infected and uninfected adults of A. parthenogenetica were collected with a plankton net (0.5 mm) within the Odiel saltpan complex. Sampling was carried out on two dates (14th of April and 15th of May 2014). Toxicity experiments were conducted after 24 h of acclimation of the Artemia at 100 g/l salinity. Two experiments were carried out. The first (with Artemia collected on 14th of April) was conducted at 25ºC. The second (Artemia collected on 15th of May) was conducted at both 25 and 29ºC. Median lethal concentration (LC50) was used to quantify Aresenic toxicity in infected and uninfected adult Artemia. Ten concentrations of As between 5 and 140 mg/l were used for the experiments at 25ºC (0, 5, 20, 35, 50, 65, 85, 95, 110, 125, 140 mg/l), and ten between 4 and 67 mg/l were used for the experiment at 29°C (0, 4, 11, 18, 25, 32, 39, 46, 53, 60, 67 mg/l) in order to estimate the LC50. Three replicates were used per concentration, with each replicate made up of a group of 10 individuals. Prevalence (P) and mean abundance (MA) were calculated separately for the “infected group” on both dates. Oxidative stress analysis and lipid droplet quantification: Artemia were sampled in May 2015 from Odiel salt ponds. A subsample was used to characterize the exact parasite composition (n = 60 infected individuals) and quantify the number of lipid droplets (n = 20 infected and 20 uninfected Artemia). The numbers of cysticercoids, prevalence, mean abundance and mean intensity were calculated for each cestode species. The number of lipid droplets was estimated according to Wurtsbaugh & Gliwicz 2001 [86]. We quantified lipid levels by inspecting individuals at 30x magnification and counting the number of lipid droplets along the right side of the 5th and 6th segments of the body. The rest of the specimens were acclimated during 24h to the experimental salinity with continuous aeration and fed ad libitum with lyophilized Tetraselmis chuii algae. The toxic concentrations of 4.69 mg/l As was selected on the basis of preliminary LC50 tests. Infected and uninfected A. parthenogenetica of the same size range were allocated to 1L glass vials (100 individuals per vial) with 600 ml of experimental solution (either control (no toxic solution) or 4.69 mg/L As) during 24h at 25 ºC (12:12 photoperiod) without food. After 24h exposure, individuals were stored at ‒80℃ until biochemical analysis. We performed the biochemical analysis on pools of 20 individuals per treatment. Number of replicates varied from 1 to 12 depending on Artemia availability. The different biomarkers were determined in the whole soft tissues after homogenization and centrifugation. We quantified five parameters as a proxy for oxidative status of Artemia: activity of four enzymes (catalase CAT, superoxide dismutase SOD, glutathione peroxidase GPx and glutathione reductase GR) and lipid peroxidation levels (thiobarbituric acid reactive substances TBARS). Total protein content in the supernatant fluid was determined following a standard Bradford’s procedure. Enzyme activity was determined colorimetrically., Peer reviewed

Proyecto: //
DOI: http://hdl.handle.net/10261/128374
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/128374
HANDLE: http://hdl.handle.net/10261/128374
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/128374
PMID: http://hdl.handle.net/10261/128374
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/128374
Ver en: http://hdl.handle.net/10261/128374
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/128374

Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/134859
Dataset. 2016

FUNCTIONAL ROLE OF NATIVE AND INVASIVE FILTER-FEEDERS, AND THE EFFECT OF PARASITES: LEARNING FROM HYPERSALINE ECOSYSTEMS [DATASET]

  • Sánchez, Marta I.
  • Paredes, Irene
  • Lebouvier, Marion
  • Green, Andy J.
Artemia franciscana vs A. parthenogenetica. Artemia sampling was conducted during November 2012 in two different salt pan complexes located along the Atlantic coast of South West Spain. Native A. parthenogenetica was collected from Odiel saltpans (Huelva 37°15'29"N, 6°58'25"W). Invasive A. franciscana were collected from La Tapa saltpans (Cádiz Bay 36º35’52”N, 06º13’07”W). In each locality, Artemia were collected from two separate evaporation ponds with distinct salinities (90 and 145 g/l). Artemia was sampled using a 0.5 mm mesh net, then they were immediately transported to the laboratory and transferred to plastic tanks containing aerated water from the same pond, and subjected to a natural photoperiod. Feeding rates were quantified at two salinities (90 and 145 g/l) and two temperatures (15 and 24 ºC). Prior to measuring feeding, individuals were acclimated for 12 hours in climatic chambers under experimental conditions (15ºC-90g/l, 15ºC-145g/l, 24ºC-90g/l or 24ºC-145g/l). Individuals were assigned to the experimental salinity that matched what they were exposed to in the field. We then selected 48 adult brine shrimps of similar size for each temperature-salinity treatment. We transferred them to Petri plates containing filtered (0.45 μm) and autoclaved water from the pond at the same salinity and temperature during 1h without food, in order to increase feeding motivation. To measure feeding rates, brine shrimps were placed individually into multi-well plates filled with 2.5 ml of freeze-dried green algae Tetraselmis chuii (EasyAlgae®, Spain) solution (algal concentration 0.2 mg/ml) and placed in climatic chambers at 24ºC and 15ºC. We prepared control and blank samples in triplicate for each treatment. Artemia individuals grazed during 4 hours under continuous light conditions. During this period, we gently agitated the water every 30 min with a plastic Pasteur pipette, to avoid food particle sedimentation at the bottom of the plates. At the end of the experiment we collected 1ml from each well and counted remaining algal particles using an EasyCyte Plus System flow cytometer (Guava Express Plus software). The number of consumed cells was calculated by subtracting the final number of cells from the initial number. For triplicate controls and blanks, samples of 1 ml were taken and counted before and after the experiment. Brine shrimps were anaesthetized with carbonated water before being mounted (sacrificed) in a temporary glycerol mount and examined under the microscope to confirm that no cestode parasites were present. We measured the length of each individual from the end of the abdomen (furca) to the top of the head using a stereomicroscope coupled with a videocamera (Axiovision software). Infected vs uninfected A. parthenogenetica. Artemia sampling was conducted at Odiel saltpans in spring 2013, from ponds of intermediate salinity where the prevalence of the cestodes Flamingolepis liguloides (hereafter FL), Anomotaenia tringae (AT, a shorebird parasite) and Confluaria podicipina (CP) was high (FL: pond E15 at 130g/l on 02/05/2013; AT and CP: pond E18 at 170g/l on 04/06/2013). We used the above experimental setup but with fixed temperature and salinity conditions. We conducted two independent experiments on the above dates, one for FL and another for CP-AT under similar conditions. Experiments were carried out at 130g/l salinity with a 0.2mg/l concentration of Tetraselmis chuii, calculating feeding rates as described above. Individuals collected from pond E18 were first acclimated to the experimental salinity for 12h. After 4 hours, all individuals were measured and their parasitic status confirmed as described above. Parasite identification followed Georgiev et al., 2005. For the first experiment we used 43 non-infected (hereafter NI) individuals and 55 infected with FL; for the second experiment we used 40 NI Artemia, 14 infected with CP and 27 with AT., Field study Temporal variation of chlorophyll-a concentration in relation to Artemia density and species. Samples of A. parthenogenetica (from Odiel) and A. franciscana (from La Tapa) were collected monthly (from April to December 2011) from three to four ponds of different salinity, by sweeping water at each point during 15 seconds from the entire water column (15-30 cm depth) using a net of 0.1 mm mesh. Given the highly patchy distribution of Artemia in the field, 10 to 20 points were selected at random from different parts of the pond including the center and shoreline. In some ponds there were no Artemia, for reasons that are unclear but are likely to include the abundance of predators such as fish at low salinities. At each pond, we measured temperature and salinity (with a refractometer) and collected unfiltered water samples for analysis of concentrations of chlorophyll-a (as a measure of phytoplankton abundance) and nutrients. Total nitrogen concentration (Total N) was measured by digestion with potassium persulfate (Sims, Ellsworth & Mulvaney, 1995). Total phosphorus concentration (Total P) was measured by the phosphomolybdate method (APHA, 1995). Chlorophyll-a analysis was performed by spectrophotometry using the trichromatic method (Strickland and Parsons 1968). Total (including all developmental stages: metanauplii, juveniles and adults) and adult Artemia density were determined in the laboratory. Spatial variation in chlorophyll-a concentration and turbidity in relation to A. parthenogenetica density and parasite prevalence. On 23/04/2013 we sampled A. parthenogenetica (at Odiel) by filtering 20 l through a 0.5 mm mesh net, at nine different ponds covering a wide range of salinities (75-235 g/l, S1 Table). Samples of water (1 l) were taken for chlorophyll-a analysis, following the above procedure. Salinity was measured with a refractometer and turbidity with a Snell tube (a modified Secchi disc suitable for shallow waters). In the laboratory the density of Artemia (adult density, plus total density including metanauplii and juveniles) as well as the total biomass (dry mass after 24h at 50ºC) was determined. Adult individuals (n = 100) from each pond were then randomly selected for calculation of parasite prevalence (using the above methods) so as to explore the effect of parasite infection on chlorophyll-a concentration and turbidity., Peer reviewed

Proyecto: //
DOI: http://hdl.handle.net/10261/134859
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/134859
HANDLE: http://hdl.handle.net/10261/134859
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/134859
PMID: http://hdl.handle.net/10261/134859
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/134859
Ver en: http://hdl.handle.net/10261/134859
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/134859

Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/137424
Dataset. 2016

MONTHLY WATERBIRDS SURVEYS IN 2015 FOR VETA LA PALMA FISH PONDS IN DOÑANA WETLAND, SOUTH SPAIN

  • Sebastián-González, Esther
  • Green, Andy J.
All the ponds within the Veta la Palma system were surveyed monthly in 2015 by experienced observers as part of a monitoring program carried out by the Doñana Biological Station (EBD-CSIC, http:// www-rbd.ebd.csic.es/Seguimiento/seguimiento.htm). Owing to staff vacations, surveys did not take place in August. All aquatic birds present were identified to species and counted. We excluded raptors, corvids and other non-aquatic species from analyses. Every pond was visited on foot in a single day and surveyed from one or more positions along the shoreline with binoculars (8 x 50) and a telescope (20 x 60). Birds flying overhead were excluded. For each survey, the observers also identified the water level. Greater flamingos Phoenicopterus roseus are particularly abundant in the ponds (Rendón et al. 2008), and their behaviour also helped in the estimation of the water level as follows: 0 totally dry; 1 almost dry, with some dry regions in the pond and some shallow water; 2 low water level, roughly half way to the tibio-tarsal articulation of flamingoes; 3 medium level, approximately to the tibio-tarsal articulation; 4 high level, above the articulation but not exceeding total leg length, Peer reviewed

Proyecto: //
DOI: http://hdl.handle.net/10261/137424
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/137424
HANDLE: http://hdl.handle.net/10261/137424
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/137424
PMID: http://hdl.handle.net/10261/137424
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/137424
Ver en: http://hdl.handle.net/10261/137424
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/137424

Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/148711
Dataset. 2017

PREDATOR-PREY INTERACTIONS BETWEEN NATIVE BRINE SHRIMP ARTEMIA PARTHENOGENETICA AND THE ALIEN BOATMAN TRICHOCORIXA VERTICALIS: INFLUENCE OF SALINITY, PREDATOR SEX, AND SIZE, ABUNDANCE AND PARASITIC STATUS OF PREY [DATASET]

  • Céspedes, Vanessa
  • Sánchez, Marta I.
  • Green, Andy J.
Peer reviewed

Proyecto: //
DOI: http://hdl.handle.net/10261/148711
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/148711
HANDLE: http://hdl.handle.net/10261/148711
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/148711
PMID: http://hdl.handle.net/10261/148711
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/148711
Ver en: http://hdl.handle.net/10261/148711
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/148711

Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/159889
Dataset. 2018

PHENOLOXIDASE ACTIVITY (UNITS/MG PROTEIN) AND TOTAL FAT (MG/ML) FOR EXPERIMENT DATA AND FIELD-SAMPLES (DOÑANA BIOLOGICAL RESERVE AND DOÑANA NATURAL PARK (SW SPAIN)

  • Céspedes, Vanessa
  • Stoks, Robby
  • Green, Andy J.
  • Sánchez, Marta I.
Peer reviewed

Proyecto: //
DOI: http://hdl.handle.net/10261/159889
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/159889
HANDLE: http://hdl.handle.net/10261/159889
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/159889
PMID: http://hdl.handle.net/10261/159889
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/159889
Ver en: http://hdl.handle.net/10261/159889
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/159889

Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/162934
Dataset. 2018

LIFE CYCLE OF T. VERTICALIS; FIELD-DATA APPROXIMATION

  • Céspedes, Vanessa
  • Coccia, Cristina
  • Carbonell, José Antonio
  • Sánchez, Marta I.
  • Green, Andy J.
Peer reviewed

Proyecto: //
DOI: http://hdl.handle.net/10261/162934
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/162934
HANDLE: http://hdl.handle.net/10261/162934
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/162934
PMID: http://hdl.handle.net/10261/162934
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/162934
Ver en: http://hdl.handle.net/10261/162934
Digital.CSIC. Repositorio Institucional del CSIC
oai:digital.csic.es:10261/162934

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