The Experts below are selected from a list of 5307 Experts worldwide ranked by ideXlab platform

Arnedo, Miquel A. - One of the best experts on this subject based on the ideXlab platform.

  • How Iberian are we? Mediterranean climate determines structure and Endemicity of spider communities in Iberian oak forests
    'Springer Science and Business Media LLC', 2020
    Co-Authors: Malumbres-olarte Jagoba, Crespo, Luis Carlos, Domenech Marc, Cardoso Pedro, Moya-larano Jordi, Ribera Carles, Arnedo, Miquel A.
    Abstract:

    Understanding the causes behind Species richness and Endemicity is fundamental to explain biodiversity and assist conservation management, especially in biodiversity hotspots like the Mediterranean Basin. Here we investigate the patterns in Iberian forest spider communities and the processes behind their assembly, by testing hypotheses about the effects of climate and habitat on Species richness, Endemicity and structure of communities at different spatial scales, and about how microhabitat and dispersal affect the level of Endemicity of Species. We studied 16 spider communities in IberianQuercusforests from different climatic zones, applying a standardised sampling protocol. We examined the contribution of habitat, climate, and geography to the differences in the composition of spider communities across spatial scales using distance-based redundancy analysis models (dbRDA) and principal coordinates of neighbour matrices (PCNM). We assessed the effects of the same variables on the Endemicity of communities (measured by a weighted index), and tested the correlation between the microhabitat and the ballooning frequency (obtained from bibliography), and the Endemicity of Species through generalised linear models. Spider communities formed two groups-one southern and one northern-based on similarity in Species composition. Precipitation and temperature were inversely related with the number of Species while geography and forest type explained the compositional similarities between communities at different spatial scales. Endemicity of communities increased with temperature and decreased with precipitation, whereas Species Endemicity decreased with ballooning frequency. Our findings illustrate how niche-related processes may drive spider diversity while dispersal determines Species distribution and identity and, ultimately, community composition. From a conservation viewpoint, when maximising Species richness is incompatible with prioritising Endemicity, the criteria to follow may depend on the geographic scale at which decisions are made.Peer reviewe

  • How Iberian are we? Mediterranean climate determines structure and Endemicity of spider communities in Iberian oak forests
    'Springer Science and Business Media LLC', 2020
    Co-Authors: Malumbres-olarte Jagoba, Domenech Marc, Cardoso Pedro, Moya-larano Jordi, Ribera Carles, Crespo, Luís C., Arnedo, Miquel A.
    Abstract:

    Understanding the causes behind Species richness and Endemicity is fundamental to explain biodiversity and assist conservation management, especially in biodiversity hotspots like the Mediterranean Basin. Here we investigate the patterns in Iberian forest spider communities and the processes behind their assembly, by testing hypotheses about the effects of climate and habitat on Species richness, Endemicity and structure of communities at different spatial scales, and about how microhabitat and dispersal affect the level of Endemicity of Species. We studied 16 spider communities in Iberian Quercus forests from different climatic zones, applying a standardised sampling protocol. We examined the contribution of habitat, climate, and geography to the differences in the composition of spider communities across spatial scales using distance-based redundancy analysis models (dbRDA) and principal coordinates of neighbour matrices (PCNM). We assessed the effects of the same variables on the Endemicity of communities (measured by a weighted index), and tested the correlation between the microhabitat and the ballooning frequency (obtained from bibliography), and the Endemicity of Species through generalised linear models. Spider communities formed two groups—one southern and one northern—based on similarity in Species composition. Precipitation and temperature were inversely related with the number of Species while geography and forest type explained the compositional similarities between communities at different spatial scales. Endemicity of communities increased with temperature and decreased with precipitation, whereas Species Endemicity decreased with ballooning frequency. Our findings illustrate how niche-related processes may drive spider diversity while dispersal determines Species distribution and identity and, ultimately, community composition. From a conservation viewpoint, when maximising Species richness is incompatible with prioritising Endemicity, the criteria to follow may depend on the geographic scale at which decisions are made.University of Barcelona through the APIF PhD fellowship; Spanish Autonomous Organization of National Parks (Ministry of Agriculture, Alimentation and Environment), 495/2012.info:eu-repo/semantics/publishedVersio

Chhaya Chaudhary - One of the best experts on this subject based on the ideXlab platform.

  • marine biogeographic realms and Species Endemicity
    Nature Communications, 2017
    Co-Authors: Mark J Costello, Peter Tsai, Pui Shan Wong, Alan Kwok Lun Cheung, Zeenatul Basher, Chhaya Chaudhary
    Abstract:

    Marine biogeographic realms have been inferred from small groups of Species in particular environments (e.g., coastal, pelagic), without a global map of realms based on statistical analysis of Species across all higher taxa. Here we analyze the distribution of 65,000 Species of marine animals and plants, and distinguish 30 distinct marine realms, a similar proportion per area as found for land. On average, 42% of Species are unique to the realms. We reveal 18 continental-shelf and 12 offshore deep-sea realms, reflecting the wider ranges of Species in the pelagic and deep-sea compared to coastal areas. The most widespread Species are pelagic microscopic plankton and megafauna. Analysis of pelagic Species recognizes five realms within which other realms are nested. These maps integrate the biogeography of coastal and deep-sea, pelagic and benthic environments, and show how land-barriers, salinity, depth, and environmental heterogeneity relate to the evolution of biota. The realms have applications for marine reserves, biodiversity assessments, and as an evolution relevant context for climate change studies.

Malumbres-olarte Jagoba - One of the best experts on this subject based on the ideXlab platform.

  • How Iberian are we? Mediterranean climate determines structure and Endemicity of spider communities in Iberian oak forests
    'Springer Science and Business Media LLC', 2020
    Co-Authors: Malumbres-olarte Jagoba, Crespo, Luis Carlos, Domenech Marc, Cardoso Pedro, Moya-larano Jordi, Ribera Carles, Arnedo, Miquel A.
    Abstract:

    Understanding the causes behind Species richness and Endemicity is fundamental to explain biodiversity and assist conservation management, especially in biodiversity hotspots like the Mediterranean Basin. Here we investigate the patterns in Iberian forest spider communities and the processes behind their assembly, by testing hypotheses about the effects of climate and habitat on Species richness, Endemicity and structure of communities at different spatial scales, and about how microhabitat and dispersal affect the level of Endemicity of Species. We studied 16 spider communities in IberianQuercusforests from different climatic zones, applying a standardised sampling protocol. We examined the contribution of habitat, climate, and geography to the differences in the composition of spider communities across spatial scales using distance-based redundancy analysis models (dbRDA) and principal coordinates of neighbour matrices (PCNM). We assessed the effects of the same variables on the Endemicity of communities (measured by a weighted index), and tested the correlation between the microhabitat and the ballooning frequency (obtained from bibliography), and the Endemicity of Species through generalised linear models. Spider communities formed two groups-one southern and one northern-based on similarity in Species composition. Precipitation and temperature were inversely related with the number of Species while geography and forest type explained the compositional similarities between communities at different spatial scales. Endemicity of communities increased with temperature and decreased with precipitation, whereas Species Endemicity decreased with ballooning frequency. Our findings illustrate how niche-related processes may drive spider diversity while dispersal determines Species distribution and identity and, ultimately, community composition. From a conservation viewpoint, when maximising Species richness is incompatible with prioritising Endemicity, the criteria to follow may depend on the geographic scale at which decisions are made.Peer reviewe

  • How Iberian are we? Mediterranean climate determines structure and Endemicity of spider communities in Iberian oak forests
    'Springer Science and Business Media LLC', 2020
    Co-Authors: Malumbres-olarte Jagoba, Domenech Marc, Cardoso Pedro, Moya-larano Jordi, Ribera Carles, Crespo, Luís C., Arnedo, Miquel A.
    Abstract:

    Understanding the causes behind Species richness and Endemicity is fundamental to explain biodiversity and assist conservation management, especially in biodiversity hotspots like the Mediterranean Basin. Here we investigate the patterns in Iberian forest spider communities and the processes behind their assembly, by testing hypotheses about the effects of climate and habitat on Species richness, Endemicity and structure of communities at different spatial scales, and about how microhabitat and dispersal affect the level of Endemicity of Species. We studied 16 spider communities in Iberian Quercus forests from different climatic zones, applying a standardised sampling protocol. We examined the contribution of habitat, climate, and geography to the differences in the composition of spider communities across spatial scales using distance-based redundancy analysis models (dbRDA) and principal coordinates of neighbour matrices (PCNM). We assessed the effects of the same variables on the Endemicity of communities (measured by a weighted index), and tested the correlation between the microhabitat and the ballooning frequency (obtained from bibliography), and the Endemicity of Species through generalised linear models. Spider communities formed two groups—one southern and one northern—based on similarity in Species composition. Precipitation and temperature were inversely related with the number of Species while geography and forest type explained the compositional similarities between communities at different spatial scales. Endemicity of communities increased with temperature and decreased with precipitation, whereas Species Endemicity decreased with ballooning frequency. Our findings illustrate how niche-related processes may drive spider diversity while dispersal determines Species distribution and identity and, ultimately, community composition. From a conservation viewpoint, when maximising Species richness is incompatible with prioritising Endemicity, the criteria to follow may depend on the geographic scale at which decisions are made.University of Barcelona through the APIF PhD fellowship; Spanish Autonomous Organization of National Parks (Ministry of Agriculture, Alimentation and Environment), 495/2012.info:eu-repo/semantics/publishedVersio

Zeenatul Basher - One of the best experts on this subject based on the ideXlab platform.

  • marine biogeographic realms and Species Endemicity
    Nature Communications, 2017
    Co-Authors: Mark J Costello, Peter Tsai, Pui Shan Wong, Alan Kwok Lun Cheung, Zeenatul Basher, Chhaya Chaudhary
    Abstract:

    Marine biogeographic realms have been inferred from small groups of Species in particular environments (e.g., coastal, pelagic), without a global map of realms based on statistical analysis of Species across all higher taxa. Here we analyze the distribution of 65,000 Species of marine animals and plants, and distinguish 30 distinct marine realms, a similar proportion per area as found for land. On average, 42% of Species are unique to the realms. We reveal 18 continental-shelf and 12 offshore deep-sea realms, reflecting the wider ranges of Species in the pelagic and deep-sea compared to coastal areas. The most widespread Species are pelagic microscopic plankton and megafauna. Analysis of pelagic Species recognizes five realms within which other realms are nested. These maps integrate the biogeography of coastal and deep-sea, pelagic and benthic environments, and show how land-barriers, salinity, depth, and environmental heterogeneity relate to the evolution of biota. The realms have applications for marine reserves, biodiversity assessments, and as an evolution relevant context for climate change studies.

Angelika Brandt - One of the best experts on this subject based on the ideXlab platform.

  • Endemicity and community composition of marine Species along the nw pacific and the adjacent arctic ocean
    Progress in Oceanography, 2019
    Co-Authors: Hanieh Saeedi, Marianna V P Simoes, Angelika Brandt
    Abstract:

    Abstract The NW Pacific lies in the most productive, rich, and diverse region of the World Ocean. The NW Pacific includes several shallow-water oceanic islands and deep-sea basins differing in depths, hydrology and isolation. The adjacent Arctic Ocean includes the northern Bering and southern Chukchi Sea, areas of high productivity characterized by short food chains and shallow depths. Despite the NW Pacifics high Species richness, characterization of Species diversity and Species composition in this region remains poorly explored and/or unknown. Here we attempt to discover how geographic boundaries and depth shape current community assemblages in this area by limiting Species richness and geographic distribution ranges. All geographic distribution records were extracted from Ocean Biogeographic Information System (OBIS) and Global Biodiversity Information Facility (GBIF). Distribution data were then cleaned, resulting in a final dataset including 324,916 distribution records of 17,414 Species ranging from 0 to 10,900 m depth. We calculated the rate of Endemicity and alpha Species richness per ecoregion. We also showed how Species composition and community structure varies between the tropical and temperate NW Pacific and adjacent Arctic Ocean when sampling bias is accounted for using rarefaction. After accounting for sampling bias, the Eastern Philippines had the greatest Species richness (for both pelagic and benthic Species) in the NW Pacific and its adjacent Arctic Ocean, and the lowest Species richness was observed in Papua. Despite the high Species richness in the Eastern Philippines, the Yellow Sea and Gulf of Tonkin had the highest benthic Species Endemicity rates (ca. 70%) and Aleutian Islands had the highest pelagic Endemicity rate (ca. 45%) among all other ecoregions. In the NW Pacific, Chordata, Arthropoda, and Mollusca contributed more than 50% to the Species composition of the community. In the Arctic Ocean, Arthropoda, Annelida, and Mollusca were the dominant taxa comprising ca. 82% of the Species community. Two significantly distinguished clusters (North and South clusters) were identified based on Species similarity analysis including ecoregions of the (1) polar Arctic Ocean and temperate North NW Pacific, and (2) tropical and sub-tropical NW Pacific. We also calculated marine Species richness hotspots (actual and expected ES50) and centers of endemism in the NW Pacific and adjacent Arctic Ocean. These analyses reveal an opportunity for marine conservation planning effort as reporting Species richness and Endemicity hotspots could be highly effective in pinpointing and preventing biodiversity loss.