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Explore WARC's science publications.

Filter Total Items: 3350

Light attenuation profiling as an indicator of structural changes in coastal marshes

To best respond to natural and human-induced stresses, resource managers and researchers require remote sensing techniques that can map the biophysical characteristics of natural resources on regional and local scales. The implementation of advanced measurement techniques would provide significant improvements in the quantity, quality, and timeliness of biophysical data useful in understanding the
Authors
Elijah Ramsey III, Gene Nelson, Frank Baarnes, R. Spell

Gulf coast states wood stork tracking project

No abstract available
Authors
Tommy Michot, Clinton W. Jeske

Evaluating the effect of salinity on a simulated American Crocodile (Crocodylus acutus) population with applications to conservation and Everglades restoration

Everglades restoration will alter the hydrology of South Florida, affecting both water depth and salinity levels in the southern fringes of the Everglades, the habitat of the endangered American crocodile (Crocodylus acutus). A key question is what the effects of these hydrologic changes will be on the crocodile population. Reliable predictions of the viability of endangered species under a variet
Authors
Paul M. Richards, Wolf M. Mooij, Donald L. DeAngelis

Biodiversity and ecosystem functioning: Synthesis and perspectives

Does diversity matter in restored communities? This edited book explores the diversity–function debate, which has raged in ecology during the past several decades. The diversity–function question is relevant in restoration, but the question has not yet received a straightforward hearing in the field of restoration science. None of the authors of this book explicitly relate their ideas to restorati
Authors
Beth A. Middleton, James B. Grace

Characterization of the habitat of Lythrum salicaria L. in floodplain forests in western Turkey—Effects on stem height and seed production

Lythrum salicaria (purple loosestrife) is an invasive wetland perennial in North America native to Eurasia. Because light environment may limit the species’ distribution, information on the relationship of forest canopy coverage to relative height and seed set in its native environment could give insight into its control in North America. This study examined the effect of various light environment
Authors
Cengiz Ture, Nuket Akanil Bingol, Beth A. Middleton

Evolutionary stability of mutualism: interspecific population regulation as an evolutionarily stable strategy

Interspecific mutualisms are often vulnerable to instability because low benefit : cost ratios can rapidly lead to extinction or to the conversion of mutualism to parasite–host or predator–prey interactions. We hypothesize that the evolutionary stability of mutualism can depend on how benefits and costs to one mutualist vary with the population density of its partner, and that stability can be mai
Authors
J. Nathaniel Holland, Donald L. DeAngelis, Stewart T. Schultz

The effects of mixotrophy on the stability and dynamics of a simple planktonic food web

Recognition of the microbial loop as an important part of aquatic ecosystems disrupted the notion of simple linear food chains. However, current research suggests that even the microbial loop paradigm is a gross simplification of microbial interactions due to the presence of mixotrophs—organisms that both photosynthesize and graze. We present a simple food web model with four trophic species, thre
Authors
Christian Jost, Cathryn A. Lawrence, Francesca Campolongo, van de Bund Wouter, Sheryl Hill, Donald L. DeAngelis

Urbanization impacts on the structure and function of forested wetlands

The exponential increase in population has fueled a significant demographic shift: 60% of the Earth's population will live in urban areas by 2030. While this population growth is significant in its magnitude, the ecological footprint of natural resource consumption and use required to sustain urban populations is even greater. The land use and cover changes accompanying urbanization (increasing hu
Authors
Stephen Faulkner

Testing hypotheses for excess flower production and low fruit-to-flower ratios in a pollinating seed-consuming mutualism

Pollinator attraction, pollen limitation, resource limitation, pollen donation and selective fruit abortion have all been proposed as processes explaining why hermaphroditic plants commonly produce many more flowers than mature fruit. We conducted a series of experiments in Arizona to investigate low fruit-to-flower ratios in senita cacti, which rely exclusively on pollinating seed-consumers. Sele
Authors
J. Nathaniel Holland, Judith L. Bronstein, Donald L. DeAngelis

Evaluation of and insights from ALFISH: a spatially explicit landscape-level simulation of fish populations in the Everglades

We present an evaluation of a spatially explicit, age-structured model created to assess fish density dynamics in the Florida Everglades area. This model, ALFISH, has been used to compare alternative management scenarios for the Florida Everglades region. This area is characterized by periodic dry downs and refloodings. ALFISH uses spatially explicit water depth data to predict patterns of fish de
Authors
Holly Gaff, John Chick, Joel Trexler, Donald L. DeAngelis, Louis Gross, Rene Salinas