Ecosphere

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Estimating trophic position in marine and estuarine food webs
Ecosphere - Tập 3 Số 3 - Trang 1-20 - 2012
W. Mather A. Carscallen, Kristen Vandenberg, Julia M. Lawson, Neo D. Martinez, Tamara N. Romanuk
Structural or binary approaches, based on presence‐absence of feeding links, are the most common method of assembling food webs and form the basis of the most well explored food web models. Binary approaches to assembling feeding links are often criticized as being less powerful and accurate than flow‐based methods. To test this assumption we compared binary estimates of trophic position w...... hiện toàn bộ
How a new fire‐suppression policy can abruptly reshape the fire‐weather relationship
Ecosphere - Tập 6 Số 10 - Trang 1-19 - 2015
Julien Ruffault, Florent Mouillot
Understanding how the interactions between anthropogenic and biophysical factors control fire regimes is increasingly becoming a major concern in a context of climate, economic and social changes. On a short time scale, fire activity is mainly driven by the variations in weather conditions. But while the assessment of this fire‐weather relationship is an essential step towards fire hazard ...... hiện toàn bộ
The fire frequency‐severity relationship and the legacy of fire suppression in California forests
Ecosphere - Tập 6 Số 1 - Trang 1-23 - 2015
Zachary L. Steel, Hugh D. Safford, Joshua H. Viers
Fire is one of the most important natural disturbance processes in the western United States and ecosystems differ markedly with respect to their ecological and evolutionary relationships with fire. Reference fire regimes in forested ecosystems can be categorized along a gradient ranging from “fuel‐limited” to “climate‐limited” where the former types are often characterized by frequent, lo...... hiện toàn bộ
Assignment of nesting loggerhead turtles to their foraging areas in the Northwest Atlantic using stable isotopes
Ecosphere - Tập 3 Số 10 - Trang 1-18 - 2012
Mariela Pajuelo, Karen A. Bjorndal, Kimberly J. Reich, Hannah B. Vander Zanden, Lucy A. Hawkes, Alan B. Bolten
Differential foraging area use can affect population demographics of highly migratory fauna because of differential environmental changes and anthropogenic threats among those areas. Thus, identification of foraging areas is vital for the development of effective management strategies for endangered migratory species. In this study, we assigned 375 loggerhead turtles (Caretta ...... hiện toàn bộ
Ecohydrology with unmanned aerial vehicles
Ecosphere - Tập 5 Số 10 - Trang 1-14 - 2014
Enrique R. Vivoni, A. Rango, Cody A. Anderson, Nicole A. Pierini, Adam Schreiner-McGraw, Srikanth Saripalli, Andrea S. Laliberte
High‐resolution characterizations and predictions are a grand challenge for ecohydrology. Recent advances in flight control, robotics and miniaturized sensors using unmanned aerial vehicles (UAVs) provide an unprecedented opportunity for characterizing, monitoring and modeling ecohydrologic systems at high‐resolution (<1 m) over a range of scales. How can the ecologic and h...... hiện toàn bộ
Grasslands—more important for ecosystem services than you might think
Ecosphere - Tập 10 Số 2 - 2019
Jan Bengtsson, James M. Bullock, Benis N. Egoh, Colin S. Everson, T. M. Everson, T.G. O’Connor, Patrick O’Farrell, Henrik G. Smith, Regina Lindborg
AbstractExtensively managed grasslands are recognized globally for their high biodiversity and their social and cultural values. However, their capacity to deliver multiple ecosystem services (ES) as parts of agricultural systems is surprisingly understudied compared to other production systems. We undertook a comprehensive overview of ES provided by natural and se...... hiện toàn bộ
Indirect effects of invasive species affecting the population structure of an ecosystem engineer
Ecosphere - Tập 6 Số 7 - Trang 1-12 - 2015
Andreas M. Waser, Wouter Splinter, Jaap van der Meer
Species invasion is of increasing concern as non‐native species often have negative impacts on ecosystems that they were introduced to. Invaders negatively affect the abundance of native species due to direct interactions like predation and competition. Additionally, invaders may benefit native biota by imposing indirect effects on resident species interactions. Invaders indirectly affect ...... hiện toàn bộ
Modeling the costs and benefits of seed scatterhoarding to plants
Ecosphere - Tập 6 Số 4 - Trang 1-8 - 2015
Zhishu Xiao, Charles J. Krebs
Many plants interact with scatterhoarding animals as mutualists (seed dispersers) and antagonists (seed predators) simultaneously, but the net effects of scatterhoarding animals are rarely measured. In seed‐dispersal mutualisms, plant benefits (recruitment) received from dispersal agents should outweigh the costs, resulting in a relative fitness gain. Otherwise, plant populations cannot be...... hiện toàn bộ
Disturbance, complexity, and succession of net ecosystem production in North America's temperate deciduous forests
Ecosphere - Tập 7 Số 6 - 2016
Christopher M. Gough, Peter S. Curtis, Brady S. Hardiman, C. M. Scheuermann, Ben Bond‐Lamberty
AbstractCentury‐old forests in the U.S. upper Midwest and Northeast power much of North America's terrestrial carbon (C) sink, but these forests' production and C sequestration capacity are expected to soon decline as fast‐growing early successional species die and are replaced by slower growing late successional species. But will this really happen? Here we marsha...... hiện toàn bộ
Suitability of Laurentian Great Lakes for invasive species based on global species distribution models and local habitat
Ecosphere - Tập 8 Số 7 - 2017
Andrew M. Kramer, Gust Annis, Marion E. Wittmann, W. Lindsay Chadderton, Edward S. Rutherford, David M. Lodge, Lacey A. Mason, Dmitry Beletsky, Catherine M. Riseng, John M. Drake
AbstractEfficient management and prevention of species invasions requires accurate prediction of where species of concern can arrive and persist. Species distribution models provide one way to identify potentially suitable habitat by developing the relationship between climate variables and species occurrence data. However, these models when applied to freshwater i...... hiện toàn bộ
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