A5091476510- Mollusks and Parasites Studies
- Geology and Paleoclimatology Research
- Aquatic Invertebrate Ecology and Behavior
- Isotope Analysis in Ecology
- Animal Ecology and Behavior Studies
- Ecology and Vegetation Dynamics Studies
- Botany and Plant Ecology Studies
- Invertebrate Taxonomy and Ecology
- Sustainability and Ecological Systems Analysis
- Global Energy and Sustainability Research
- Plant and animal studies
- Species Distribution and Climate Change
- Evolution and Paleontology Studies
- Wildlife Ecology and Conservation
- Lichen and fungal ecology
- Marine Biology and Ecology Research
- Paleopathology and ancient diseases
- Botany, Ecology, and Taxonomy Studies
- Fish Ecology and Management Studies
- Pleistocene-Era Hominins and Archaeology
- Geological formations and processes
- Sustainable Development and Environmental Policy
- Parasite Biology and Host Interactions
- Marine Bivalve and Aquaculture Studies
- Fern and Epiphyte Biology
Masaryk University
2017-2025
University of New Mexico
2009-2018
University of Arizona
2010
University of Wisconsin–Green Bay
1997-2003
University of North Carolina at Chapel Hill
1999
Summary Aim Our aim was to understand how similarity changes with distance in biological communities, use the decay perspective as quantitative technique describe biogeographic pattern, and explore whether growth form, dispersal type, rarity, or support affected rate of similarity. Location North American spruce‐fir forests, Appalachian montane forests. Methods We estimated rates through regression log‐transformed compositional against for pairwise comparisons thirty‐four white spruce plots...
The human population and economy have grown exponentially now impacts on climate, ecosystem processes, biodiversity far exceeding those of any other species. Like all organisms, humans are subject to natural laws limited by energy resources. In this article, we use a macro ecological approach integrate perspectives physics, ecology, economics with an analysis extensive global data show how imposes fundamental constraints economic growth development. We demonstrate positive scaling...
Human societies have always faced temporal and spatial fluctuations in food availability. The length of time that remains edible nutritious depends on temperature, moisture, other factors affect the growth rates organisms cause spoilage. Some storage techniques, such as drying, salting, smoking, date back to ancient hunter–gatherer early agricultural use relatively low energy inputs. Newer technologies developed since industrial revolution, canning compressed-gas refrigeration, require much...
Gravity models are commonly used by geographers to predict migration and interaction between populations regions. Even though rarely ecologists, gravity allow estimation of long-distance dispersal discrete points in heterogeneous landscapes. We developed a production-constrained model forecast zebra mussel (Dreissena polymorpha) into inland lakes Illinois, Indiana, Michigan, Wisconsin (USA) based on the site location number boats within 364 counties. A deterministic form this was estimate...
The discipline of sustainability science has emerged in response to concerns natural and social scientists, policymakers, lay people about whether the Earth can continue support human population growth economic prosperity. Yet, developed largely independently from with little reference key ecological principles that govern life on Earth. A macroecological perspective highlights three should be integral science: 1) physical conservation laws flows energy materials between systems environment,...
Two types of biological refugia (habitats that support populations not able to live elsewhere in a landscape) can be defined from relative refugium age as compared surrounding matrix age; paleorefugia are now-fragmented relicts formerly widespread community, whereas neorefugia have formed more recently than the matrix. This difference should make extinction relatively important process determining species occurrence paleorefugia, immigration neorefugia. Based on these differences, series...
Ecologists often believe the discovery of mechanism to be central goal scientific research. While many macroecologists have inherited this view, date they been much more efficient at producing patterns than identifying their underlying processes. We discuss several possible attitudes for adopt in context while also arguing that fact macroecology already has mechanisms are ignored. briefly describe six these: limit theorem, fractals, random sampling and placement, neutral theory (and...
While the effects of contemporaneous local environment on species richness have been repeatedly documented, much less is known about historical effects, especially over large temporal scales. Using fen sites in Western Carpathian Mountains with radiocarbon‐dated ages spanning Late Glacial to modern times (16 975–270 cal years before 2008), we compiled data from same plots for three groups taxa contrasting dispersal modes: (1) vascular plants, which macroscopic propagules possessing variable,...
We examine a novel mathematical approach which posits that the decay of similarity in community composition with increasing distance (aka decay) can be modeled as sum individual species joint‐probability vs relationships. Our model, supported by analyses these curves from three datasets (North American breeding birds, North taiga plants, and tropical forest trees), suggest when sampling grain is large enough to avoid absences due stochastic effects, and/or extent generate turnover through...
Abstract General statistical patterns in community ecology have attracted considerable recent debate. Difficulties discriminating among mathematical models and the ecological mechanisms underlying them are likely related to a phenomenon first described by Frank Preston. He noted that frequency distribution of abundances species was uncannily similar Boltzmann kinetic energies gas molecules Pareto incomes wage earners. We provide additional examples show four different ‘distributions wealth’...
Knowledge of present‐day communities and ecosystems resembling those reconstructed from the fossil record can help improve our understanding historical distribution patterns species composition past communities. Here, we use a unique data set 570 plots explored for vascular plant 315 land‐snail assemblages located along 650‐km‐long transect running across steep climatic gradient in Russian Altai Mountains their foothills southern Siberia. We analysed habitat requirements modern populations...
A revised database of terrestrial gastropods from North America north Mexico was assembled in the spring 2012, which included not only all likely species-level entities, updated family and naturalized exotic assignments, but also shell body size data. Analyses these reveal that: (1) fauna represents approximately 1,200 species, is dominated by Polygyridae, Helminthoglyptidae, Vertiginidae. This number surprisingly small, with other land masses ½ to 1/100th possessing a larger fauna; (2)...
Steppe‐tundra is considered to have been a dominant ecosystem across northern Eurasia during the Last Glacial Maximum. As fossil record insufficient for understanding ecology of this vanished ecosystem, modern analogues sought, especially in Beringia. However, Beringian ecosystems are probably not best more southern variants full‐glacial steppe‐tundra because they lack many plant and animal species temperate steppes found from various areas Europe Siberia. We present new data on flora, land...
The Pupillidae form an important component of eastern North American land snail biodiversity, representing approx. 12% the entire fauna, 25–75% all species and individuals at regional scales, least 30% diversity, 33% within any given site. In some regions pupillids represent 80–100% total molluscan diversity sites, notably in taiga, tundra, base-poor pine savannas pocosins southeastern coastal plain. Adequate documentation biodiversity thus requires investigators to efficiently collect...
Using the Pupilla faunas of Europe, North America, Altai region central Asia and eastern Asia, we consider whether existing taxonomy based primarily on shell apertural characteristics correlates with relationships established basis mitochondrial nuclear DNA-sequence data. We obtained DNA sequence from ITS1 ITS2 COI CytB 80 specimens across 22 putative taxa. The data were analysed using maximum likelihood, parsimony, Bayesian neighbour-joining phylogenetic tree reconstruction, as well...
The biota of North Atlantic islands evokes intriguing questions on its evolution, colonisation routes, and an equilibrium between dispersal limitation climatic/habitat constraints. While good data non‐marine snails exist for most the islands, Greenland were observed mainly 1850 1900. recorded species have been described as endemics, but this conclusion has never fully questioned based evidence. It can be assumed that these passively dispersing invertebrates are in fact American origin, due...
Abstract: Previous ordination studies of land snail community composition have been limited to four or fewer habitat types from sites separated by no more than 300 km. To investigate the nature large‐scale patterns, North American assemblages at 421 sites, representing 26 and covering a 1400 × 800 km area, were ordinated using global, nonmetric multi‐dimensional scaling (NMDS). These data then subjected model‐based cluster analysis kmeans clustering identify main compositional groups most...
Research Article| November 01, 2011 Chronology, sedimentology, and microfauna of groundwater discharge deposits in the central Mojave Desert, Valley Wells, California Jeffrey S. Pigati; Pigati † 1U.S. Geological Survey, Denver Federal Center, Box 25046, MS-980, Denver, Colorado 80225, USA †E-mail: jpigati@usgs.gov Search for other works by this author on: GSW Google Scholar David M. Miller; Miller 2U.S. 345 Middlefield Road, MS-973, Menlo Park, 94025, Jordon E. Bright; Bright § 3School Earth...
Abstract Air circulation through talus slopes creates unique microclimates, with some of the most interesting being low-elevation mid-latitude scree in areas frequent snow-free < 0°C (e.g. "black frost") days that allow for development year-round ice accumulations. Here, we document this phenomenon on Kamenec Hill North Bohemia (Czech Republic) located at an altitude 330 m above sea level, where mean annual temperatures are maintained a narrow strip along slope's lower margin. This...