نتایج جستجو برای: natural succession

تعداد نتایج: 491902  

2017
Francisco C Ferreira Junior Raquel A Rodrigues Vincenzo A Ellis Lemuel O Leite Magno A Z Borges Érika M Braga

Habitat modification may change vertebrate and vector-borne disease distributions. However, natural forest regeneration through secondary succession may mitigate these effects. Here we tested the hypothesis that secondary succession influences the distribution of birds and their haemosporidian parasites (genera Plasmodium and Haemoproteus) in a seasonally dry tropical forest, a globally threate...

Journal: :Remote Sensing 2017
Uriel Jeshua Sánchez-Reyes Santiago Niño-Maldonado Ludivina Barrientos-Lozano Jacinto Treviño-Carreón

Loss of vegetation cover is a major factor that endangers biodiversity. Therefore, the use of geographic information systems and the analysis of satellite images are important for monitoring these changes in Natural Protected Areas (NPAs). In northeastern Mexico, the Natural Protected Area Altas Cumbres (NPAAC) represents a relevant floristic and faunistic patch on which the impact of loss of v...

2016
Marilou P. Sison-Mangus Sunny Jiang Raphael M. Kudela Sanjin Mehic

Pseudo-nitzschia blooms often occur in coastal and open ocean environments, sometimes leading to the production of the neurotoxin domoic acid that can cause severe negative impacts to higher trophic levels. Increasing evidence suggests a close relationship between phytoplankton bloom and bacterial assemblages, however, the microbial composition and succession during a bloom process is unknown. ...

Journal: :Organization Science 2003
Noam Wasserman

In the last few decades, we have developed a substantial body of knowledge about CEO succession. However, except for some studies of family businesses that lack direct applicability to nonfamily CEO succession, the past studies of succession have not examined the very first succession event in a firm, when the Founder-CEO is replaced, on a largescale basis. The critical differences between late...

Journal: :Entropy 2014
Paul C. Stoy Hua Lin Kimberly A. Novick Mario B. S. Siqueira Jehn-Yih Juang

Ecosystem entropy production is predicted to increase along ecological succession and approach a state of maximum entropy production, but few studies have bridged the gap between theory and data. Here, we explore radiative entropy production in terrestrial ecosystems using measurements from 64 Free/Fair-Use sites in the FLUXNET database, including a successional chronosequence in the Duke Fores...

Journal: :CoRR 2011
Odile Piton Slim Mesfar Hélène Pignot

Since 2006 we have undertaken to describe the differences between 17th century English and contemporary English thanks to NLP software. Studying a corpus spanning the whole century (tales of English travellers in the Ottoman Empire in the 17th century, Mary Astell's essay A Serious Proposal to the Ladies and other literary texts) has enabled us to highlight various lexical, morphological or gra...

2017
Katherine J. Elliott Peter V. Caldwell Steven T. Brantley Chelcy F. Miniat James M. Vose Wayne T. Swank

Many currently forested areas in the southern Appalachians were harvested in the early 1900s and cleared for agriculture or pasture, but have since been abandoned and reverted to forest (old-field succession). Land-use and land-cover changes such as these may have altered the timing and quantity of water yield (Q). We examined 80 years of streamflow and vegetation data in an experimental waters...

2006
Lawrence R. Walker Joe Walker Roger del Moral

1. Succession and restoration are intrinsically linked because succession comprises species and substrate change over time and restoration is the purposeful manipulation of that change. 2. During succession both orderly and unpredictable patterns emerge but some general rules offer theoretical and practical insights for restoration activities. These insights are not often utilized due to inadeq...

2010
Kumutha Swampillai Mark Stevenson

In natural language relationships between entities can asserted within a single sentence or over many sentences in a document. Many information extraction systems are constrained to extracting binary relations that are asserted within a single sentence (single-sentence relations) and this limits the proportion of relations they can extract since those expressed across multiple sentences (inter-...

2015
Jean-Baptiste Romagnan Louis Legendre Lionel Guidi Jean-Louis Jamet Dominique Jamet Laure Mousseau Maria-Luiza Pedrotti Marc Picheral Gabriel Gorsky Christian Sardet Lars Stemmann

Ecological succession provides a widely accepted description of seasonal changes in phytoplankton and mesozooplankton assemblages in the natural environment, but concurrent changes in smaller (i.e. microbes) and larger (i.e. macroplankton) organisms are not included in the model because plankton ranging from bacteria to jellies are seldom sampled and analyzed simultaneously. Here we studied, fo...

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