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Explore WARC's science publications.

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On the halophytic nature of mangroves On the halophytic nature of mangroves

Scientists have discussed the halophytic nature of intertidal plants for decades, and have generally suggested that inherent differentiation of an obligate halophyte from a facultative halophyte relates strongly to whether the plant can survive in fresh water, and not much else. In this mini-review, we provide additional insight to support the pervasive notion that mangroves as a group...
Authors
Ken W. Krauss, Marilyn C. Ball

Temporal shifts in top-down vs. bottom-up control of epiphytic algae in a seagrass ecosystem Temporal shifts in top-down vs. bottom-up control of epiphytic algae in a seagrass ecosystem

In coastal marine food webs, small invertebrate herbivores (mesograzers) have long been hypothesized to occupy an important position facilitating dominance of habitat-forming macrophytes by grazing competitively superior epiphytic algae. Because of the difficulty of manipulating mesograzers in the field, however, their impacts on community organization have rarely been rigorously...
Authors
Matthew A. Whalen, J. Emmett Duffy, James B. Grace

Representing the acquisition and use of energy by individuals in agent-based models of animal populations Representing the acquisition and use of energy by individuals in agent-based models of animal populations

1. Agent-based models (ABMs) are widely used to predict how populations respond to changing environments. As the availability of food varies in space and time, individuals should have their own energy budgets, but there is no consensus as to how these should be modelled. Here, we use knowledge of physiological ecology to identify major issues confronting the modeller and to make...
Authors
Richard M. Sibly, Volker Grimm, Benjamin T. Martin, Alice Johnston, Katarzyna Kulakowska, Christopher J. Topping, Peter Calow, Jacob Nabe-Nielsen, Pernille Thorbek, Donald L. DeAngelis

Trait contributions to fish community assembly emerge from trophicinteractions in an individual-based model Trait contributions to fish community assembly emerge from trophicinteractions in an individual-based model

Community ecology seeks to understand and predict the characteristics of communities that can develop under different environmental conditions, but most theory has been built on analytical models that are limited in the diversity of species traits that can be considered simultaneously. We address that limitation with an individual-based model to simulate assembly of fish communities...
Authors
Henrique C. Giacomini, Donald DeAngelis, Joel C. Trexler, Miguel Petrere

Movement mysteries unveiled: spatial ecology of juvenile green sea turtles Movement mysteries unveiled: spatial ecology of juvenile green sea turtles

Locations of important foraging areas are not well defined for many marine species. Unraveling these mysteries is vital to develop conservation strategies for these species, many of which are threatened or endangered. Satellite-tracking is a tool that can reveal movement patterns at both broad and fine spatial scales, in all marine environments. This chapter presents records of the...
Authors
Donna J. Shaver, Kristen M. Hart, Ikuko Fujisaki, Cynthia Rubio, Autumn R. Sartain-Iverson

Importance of floodplain connectivity to fish populations in the Apalachicola River, Florida Importance of floodplain connectivity to fish populations in the Apalachicola River, Florida

Floodplain habitats provide critical spawning and rearing habitats for many large-river fishes. The paradigm that floodplains are essential habitats is often a key reason for restoring altered rivers to natural flow regimes. However, few studies have documented spatial and temporal utilization of floodplain habitats by adult fish of sport or commercial management interest or assessed...
Authors
O.T. Burgess, William E. Pine, S. J. Walsh

Use and interpretation of climate envelope models: a practical guide Use and interpretation of climate envelope models: a practical guide

This guidebook is intended to provide a practical overview of climate envelope modeling for conservation professionals and natural resource managers. The material is intended for people with little background or experience in climate envelope modeling who want to better understand and interpret models developed by others and the results generated by such models, or want to do some...
Authors
James I. Watling, Laura A. Brandt, Frank J. Mazzotti, Stephanie S. Romañach

Adaptive harvest management for the Svalbard population of pink-footed geese: briefing summary Adaptive harvest management for the Svalbard population of pink-footed geese: briefing summary

The African-Eurasian Waterbird Agreement (AEWA; http://www.unep-aewa.org/) calls for means to manage populations which cause conflicts with certain human economic activities. The Svalbard population of the pink-footed goose has been selected as the first test case for such an international species management plan to be developed. This document describes progress to date on the...
Authors
Fred A. Johnson

Emergent wetlands status and trends in the northern Gulf of Mexico: 1950-2010 Emergent wetlands status and trends in the northern Gulf of Mexico: 1950-2010

Throughout the past century, emergent wetlands have been declining across the Gulf of Mexico. Emergent wetland ecosystems provide many resources, including plant and wildlife habitat, commercial and recreational economic activity, water quality, and natural barriers against storms. As emergent wetland losses increase, so does the need for information on the causes and effects of this...

Application of ground-truth for classification and quantification of bird movements on migratory bird habitat initiative sites in southwest Louisiana: final report Application of ground-truth for classification and quantification of bird movements on migratory bird habitat initiative sites in southwest Louisiana: final report

This project was initiated to assess migrating and wintering bird use of lands enrolled in the Natural Resources Conservation Service’s (NRCS) Migratory Bird Habitat Initiative (MBHI). The MBHI program was developed in response to the Deepwater Horizon oil spill in 2010, with the goal of improving/creating habitat for waterbirds affected by the spill. In collaboration with the University...
Authors
Wylie C. Barrow, Michael J. Baldwin, Lori A. Randall, John Pitre, Kyle J. Dudley

Adaptive harvest management for the Svalbard population of pink-footed geese: cooperator report Adaptive harvest management for the Svalbard population of pink-footed geese: cooperator report

This document describes progress to date on the development of a harvest‐management strategy for maintaining pink‐footed goose abundance near their target level by providing for sustainable harvests in Norway and Denmark. Many goose populations in western Europe have increased dramatically in recent decades. The Svalbard population of pink‐footed geese (Anser brachyrhynchus) is a good...
Authors
Fred A. Johnson, Gitte H. Jensen, Jesper Madsen
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