A5065238265- Species Distribution and Climate Change
- Ecology and Vegetation Dynamics Studies
- Bat Biology and Ecology Studies
- Wildlife Ecology and Conservation
- Animal Ecology and Behavior Studies
- Evolution and Paleontology Studies
- Plant and animal studies
- Fire effects on ecosystems
- Isotope Analysis in Ecology
- Mollusks and Parasites Studies
- Conservation, Biodiversity, and Resource Management
- Viral Infections and Vectors
- Coastal wetland ecosystem dynamics
- Geological and Geochemical Analysis
- Morphological variations and asymmetry
- Amphibian and Reptile Biology
- Marine Biology and Ecology Research
- Land Use and Ecosystem Services
- Rangeland and Wildlife Management
- Freshwater macroinvertebrate diversity and ecology
- Hemiptera Insect Studies
- African Botany and Ecology Studies
- Soil Geostatistics and Mapping
- Aquatic Invertebrate Ecology and Behavior
- Rabies epidemiology and control
University of Connecticut
2016-2025
University of Münster
2017-2025
Hewlett-Packard (Netherlands)
2025
University of Georgia
2022
University of York
2022
Ecological Society of America
2020
Eagle Mount
2019
International Institute of Tropical Forestry
2015
Northern Research Station
2015
Forest Products Laboratory
2015
▪ Abstract The latitudinal gradient of decreasing richness from tropical to extratropical areas is ecology's longest recognized pattern. Nonetheless, notable exceptions the general pattern exist, and it well that patterns may be dependent on characteristics spatial scale taxonomic hierarchy. We conducted an extensive survey literature provide a synthetic assessment degree which variation in (positive linear, negative modal, or nonsignificant) consequence (extent focus) taxon. In addition, we...
Understanding the relationship between species richness and productivity is fundamental to management preservation of biodiversity. Yet despite years study intense theoretical interest, this remains controversial. Here, we present results a literature survey in which examined 171 published studies. We extracted raw data from tables graphs subjected these standardized analysis, using ordinary least-squares (OLS) regression generalized linear-model (GLIM) test for significant positive,...
▪ Abstract Recent overviews have suggested that the relationship between species richness and productivity (rate of conversion resources to biomass per unit area time) is unimodal (hump-shaped). Most agree affects at large scales, but unanimity less regarding underlying mechanisms. studies examined possibility variation in within communities may influence productivity, leading an exploration relative effect alterations number se as contrasted addition productive species. Reviews literature...
Climate is a driver of biotic systems. It affects individual fitness, population dynamics, distribution and abundance species, ecosystem structure function. Regional variation in climatic regimes creates selective pressures for the evolution locally adapted physiologies, morphological adaptations (e.g., color patterns, surface textures, body shapes sizes), behavioral foraging strategies breeding systems). In absence humans, broad-scale, long-term consequences warming on wild organisms are...
Thorough censuses have been made of breeding birds on islands in Pymatuning Lake, a reservoir at the Pennsylvania—Ohio border. Analysis yields conclusion that for these variation number resident avian species with island size is which one would expect if were distributed randomly, probability pair residing an proportional to area and independent presence other pairs. This type random placement individuals can yield species—area relations differ from those commonly employed analysis...
Abstract Understanding the causes of spatial variation in species richness is a major research focus biogeography and macroecology. Gridded environmental data maps have been used increasingly sophisticated curve‐fitting analyses, but these methods not brought us much closer to mechanistic understanding patterns. During past two decades, macroecologists successfully addressed technical problems posed by autocorrelation, intercorrelation predictor variables non‐linearity. However, approaches...
The metacommunity framework is a powerful platform for evaluating patterns of species distribution in geographic or environmental space. Idealized (checkerboard, Clementsian, evenly spaced, Gleasonian and nested distributions) give the shape. Each pattern represents an area multidimensional continuum structures; however, current approach to analysis spatial structure metacommunities incomplete. To address this, we describe additional non-random structures illustrate how they may be discerned...
Extinction rates in the Anthropocene are three orders of magnitude higher than background and disproportionately occur tropics, home half world's species. Despite global efforts to combat tropical species extinctions, lack high-quality, objective information on biodiversity has hampered quantitative evaluation conservation strategies. In particular, scarcity population-level monitoring forests stymied assessment outcomes, such as status trends animal populations protected areas. Here, we...
Although many indices estimate diversity, species richness recently has been used as a surrogate for diversity in studies ecology, biogeography, and conservation. Underlying assumptions of this approach are that all indices, including those weight importance by their relative abundance (e.g., evenness), correlated positively, accounts large proportion the variance diversity. We addressed these with data from six grassland sites using univariate multivariate analyses variety (species...
Understanding effects of habitat loss and fragmentation on populations or communities is critical to effective conservation restoration. This particularly important for bats because they provide vital services ecosystems via pollination seed dispersal, especially in tropical subtropical habitats. Based more than 1,000 h survey during a 15-month period, we quantified species abundances community structure phyllostomid at 14 sites 3,000-km2 region eastern Paraguay. Abundance was highest...
A major challenge in evaluating patterns of species richness and productivity involves acquiring data to examine these relationships empirically across a range ecologically significant spatial scales. In this paper, we use from herb‐dominated plant communities at six Long‐Term Ecological Research (LTER) sites how the relationship between density above‐ground net primary (ANPP) differs when scale analysis is changed. We quantified different scales which varied focus extent analysis: (1) among...
Although it is commonly assumed that closely related animals are similar in body size, the degree of similarity has not been examined across taxonomic hierarchy. Moreover, little known about variation or consistency size patterns geographic space evolutionary time. Here, we draw from a data set terrestrial, nonvolant mammals to quantify and compare spectrum, hierarchy, continental space, We employ variety statistical techniques including "sib‐sib" regression, phylogenetic autocorrelation,...
Ecological assessments of the effects anthropogenic change often focus on species richness or abundances. Nonetheless, changes in behavior (e.g., activity patterns) may provide equally important insights into responses to disturbance that have conservation management implications. Because many neotropical bats critical ecosystem services, their be particular concern. We evaluated season and habitat conversion temporal patterns 8 abundant frugivorous lowland tropical rain forest Iquitos,...
Bacterial diversity in soil is high relative to more homogeneous environments (e.g., freshwater or marine habitats). Isolation imparted by fragmented aquatic microhabitats unsaturated likely plays a large role creating this diversity. We evaluate the of texture, which determines extent and connectivity microhabitats, constraining bacterial Soil samples with range textures were collected from sixteen sites across Connecticut Massachusetts. particle size distributions measured determine...
Mammals were collected in northeastern Brazil between 1975 and 1978. Research was concentrated the State of Pernambuco environs Municipality Exu Ceara, Crato.Additionally, a representative sample mammals throughout Caatingas housed National Museum Rio de Janeiro Zoology University Sao Paulo examined.Distributional data as well ecological notes are presented this preliminary report.Major collecting localities also described. Annals Carnegie MuseumVOL. 50 CollectionsMost our done immediate...
Various ecological mechanisms influence the forms of species richness relationships (SRRs). These can be gathered under five general categories: more individuals, environmental heterogeneity, dispersal limitations, biotic interactions, and multiple pools. Often only first two categories are discussed. In contrast, we examine all explore how they form SRRs. We discuss various sampling schemes methods SRR construction used to gain insight about processes patterns. The field is ripe for probing...
Summary Habitat loss and fragmentation are serious threats to biodiversity, especially in the Amazon Basin, where biodiversity is greatest deforestation continuing at an alarming rate. Nonetheless, little known about responses of biotas spatially explicit aspects landscape structure. Bats a promising indicator group for studying consequences forest Neotropics. Therefore, population‐ assemblage‐level bats composition configuration were quantified each three focal scales (circles 1‐, 3‐, 5‐km...
ABSTRACT Habitat fragmentation and conversion are among the human activities that pose greatest threat to species persistence conservation of biodiversity. This is particularly true in Neotropics, where bats represent important components biodiversity from taxonomic functional perspectives, provide critical ecosystem services ( e.g ., seed dispersal pollination). We assessed degree which lowland Amazonian rain forest agriculture, its subsequent abandonment secondary succession, affect...