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Articles 1 - 7 of 7
Full-Text Articles in Life Sciences
Non‐Linear Thresholds Characterize The Relationship Between Reef Fishes And Mangrove Habitat, Geoffrey S. Shideler, Rafael J. Araujo, Brian K. Walker, Jeremiah Blondeau, Joseph E. Serafy
Non‐Linear Thresholds Characterize The Relationship Between Reef Fishes And Mangrove Habitat, Geoffrey S. Shideler, Rafael J. Araujo, Brian K. Walker, Jeremiah Blondeau, Joseph E. Serafy
Marine & Environmental Sciences Faculty Articles
A significant obstacle to evaluating the importance of mangrove habitat to coral reef fishes has been the difficulty of disentangling its effects from other subtidal/nearshore habitats or human population pressures. Florida's seascape, unlike most others, has been extensively surveyed and mapped, and there are reliable estimates of human population density. Despite many studies that have correlated reef fish abundance with nearby mangrove habitat, some researchers continue to question the importance of mangroves to reef fishes. Previous studies that have investigated the mangrove–reef fish subsidy effect have applied methods that either compared averages or examined linear relationships; yet there is a …
Phylogenetically Clumped Species Composition Of Marine Green Algae (Chlorophyta) In The Temperate Zone, Hungyen Chen, Satoshi Nagai
Phylogenetically Clumped Species Composition Of Marine Green Algae (Chlorophyta) In The Temperate Zone, Hungyen Chen, Satoshi Nagai
Journal of Marine Science and Technology
Global patterns of diversity in marine algae have been reported at the genus level but rarely at the species level. In this study, we investigate the global distribution of species diversity for marine green algae and evaluate the effect of water temperature upon the species composition. We calculated and mapped the species richness and phylogenetic diversity of green algae in 5° x 5° latitude-longitude cells. We then compared and grouped the different spatial patterns of phylogenetic species composition of green algae around the world. Finally, we fitted a locally weighted scatterplot smoothing (LOWESS) curve to the sea surface temperature (SST) …
The Influence Of Matrix Contrast On Species Richness In Fragmented Landscapes, Ian Reider
The Influence Of Matrix Contrast On Species Richness In Fragmented Landscapes, Ian Reider
Masters Theses
Habitat destruction is the leading threat to biodiversity worldwide, causing once continuous landscapes to become fragmented and isolated and harming the persistence of biodiversity. Our goal was to determine how species richness in fragmented forest landscapes is influenced by the vegetation density of the surrounding matrix. We gathered existing studies of fragmented landscapes with Species Area Relationship (SAR) data and analyzed the landscape vegetation in each study site using satellite imagery in ArcGIS. We investigated to see how contrast between vegetation density in matrix versus forested habitat areas correlated to the strength of the SAR for the 45 study landscapes …
Groundcover Community Assembly In High-Diversity Pine Savannas: Seed Arrival And Fire-Generated Environmental Filtering, Kyle E. Harms, Paul R. Gagnon, Heather A. Passmore, Jonathan A. Myers, William J. Platt
Groundcover Community Assembly In High-Diversity Pine Savannas: Seed Arrival And Fire-Generated Environmental Filtering, Kyle E. Harms, Paul R. Gagnon, Heather A. Passmore, Jonathan A. Myers, William J. Platt
Biology Faculty Publications & Presentations
Environmental filtering—abiotic and biotic constraints on the demographic performance of individual organisms—is a widespread mechanism of selection in communities. A given individual is “filtered out” (i.e., selectively removed) when environmental conditions or disturbances like fires preclude its survival and reproduction. Although interactions between these filters and dispersal from the regional species pool are thought to determine much about species composition locally, there have been relatively few studies of dispersal × filtering interactions in species-rich communities and fewer still where fire is also a primary selective agent. We experimentally manipulated dispersal and filtering by fire (pre-fire fuel loads and post-fire ash) …
Species Diversity And Community Structure Of Zooplankton In Threedifferent Types Of Water Body Within The Sakarya River Basin, Turkey, Pinar Gürbüzer, Özge Buyurgan, Çağri Tekatli, Ahmet Altindağ
Species Diversity And Community Structure Of Zooplankton In Threedifferent Types Of Water Body Within The Sakarya River Basin, Turkey, Pinar Gürbüzer, Özge Buyurgan, Çağri Tekatli, Ahmet Altindağ
Turkish Journal of Zoology
The aim of this study was to identify differences between different types of water body within the same river basin by comparing the composition of the zooplankton community. The study was conducted in three types of water body in the Sakarya Basin in northwestern Turkey: an alluvial barrier lake (Lake Poyrazlar), a pond (Sorgun Pond), and a reservoir (Çubuk II Reservoir). The spatiotemporal changes of these three types of aquatic habitats were investigated in terms of the zooplankton organisms by examining their diversity, evenness, and differences in the abundance of species. A total of 81 species were identified. Thirty-eight species …
A Nonparametric Approach In Quantifying Species Richness Of Lumbricidae In East Serbia, Balkan Peninsula, Mirjana Stojanovic, Jovana Sekulic, Tanja Trakic
A Nonparametric Approach In Quantifying Species Richness Of Lumbricidae In East Serbia, Balkan Peninsula, Mirjana Stojanovic, Jovana Sekulic, Tanja Trakic
Turkish Journal of Zoology
The concept of species richness is currently the most basic and most often used parameter in quantitative assessments of biodiversity. The species richness of Lumbricidae was investigated in East Serbia, one of the highly complex areas in the eastern and central part of the Balkan Peninsula. Our database included 2615 individuals from a total of 54 species. Quantification of species richness was done by using the observed number of species and richness estimators. A nonparametric approach was used to evaluate the performance of various estimation techniques: Chao 2, Jackknife 2, and Bootstrap. However, only Chao 2 reached the asymptote, maintaining …
Ecological Gradient Analyses Of Plant Associations In The Thandiani Forestsof The Western Himalayas, Pakistan, Waqas Khan, Shujaul Mulk Khan, Habib Ahmad, Aamir Shakeel, Sue Page
Ecological Gradient Analyses Of Plant Associations In The Thandiani Forestsof The Western Himalayas, Pakistan, Waqas Khan, Shujaul Mulk Khan, Habib Ahmad, Aamir Shakeel, Sue Page
Turkish Journal of Botany
In the summers of 2012 and 2013, vegetation of Thandiani in the Western Himalayas of Pakistan was surveyed and quantified. We took evidence from relationships between 252 species and 11 measured environmental factors as well as changes in the associations' structure among 50 analysed stations with 1500 m2 plots. We analysed how the plant associations differ and develop under the influence of their respective ecological gradients. Preliminary results showed that the family Pinaceae was the most abundant family with a family importance value (FIV) of 1892.4, followed by Rosaceae with FIV = 1478.2. Rosaceae, represented by 20 species, was the …