Results 41 to 50 of about 217,153 (254)

An experimental field study of delayed density dependence in natural populations of Aedes albopictus. [PDF]

PLoS ONE, 2012
Aedes albopictus, a species known to transmit dengue and chikungunya viruses, is primarily a container-inhabiting mosquito. The potential for pathogen transmission by Ae. albopictus has increased our need to understand its ecology and population dynamics.
Rachael K Walsh, Caitlin Bradley, Charles S Apperson, Fred Gould   +3 more
doaj   +1 more source

Comment on “Plant diversity increases with the strength of negative density dependence at the global scale” [PDF]

Science, 2018
LaManna et al . (Reports, 30 June 2017, p. 1389) claim that subadult trees are proportionally less common at high conspecific adult density (CNDD) and that this effect increases toward the tropics and for rare species.
Lisa Hülsmann, Florian Hartig
openaire   +5 more sources

Long-term dynamics of density dependence reveals a more stable effect of the neighborhood on tree growth than tree survival.

PLoS ONE
Density dependence is a vital mechanism for explaining tree species diversity. Empirical studies worldwide have demonstrated that neighbor density influences plant survival and growth in various communities.
Liping Wang, Junjie Wu, Fengxian Chen
doaj   +1 more source

Negative density dependence of sympatric Hinge-back Tortoises (Kinixys erosa and K. homeana) in West Africa

Acta Herpetologica, 2008
A series of 59 transect surveys was conducted in selected wet forest habitats, along the coast of West Africa, to estimate the density distribution of African Hinge-back tortoises (Kinixys homeana and K. erosa).
Luca Luiselli, Francesco M. Angelici, Lorenzo Rugiero, Godfrey C. Akani, Edem A. Eniang, Nic Pacini, Edoardo Politano   +6 more
doaj   +1 more source

Mycorrhizal feedbacks influence global forest structure and diversity

Communications Biology, 2023
One mechanism proposed to explain high species diversity in tropical systems is strong negative conspecific density dependence (CDD), which reduces recruitment of juveniles in proximity to conspecific adult plants.
Camille S. Delavaux, Joseph A. LaManna, Jonathan A. Myers, Richard P. Phillips, Salomón Aguilar, David Allen, Alfonso Alonso, Kristina J. Anderson-Teixeira, Matthew E. Baker, Jennifer L. Baltzer, Pulchérie Bissiengou, Mariana Bonfim, Norman A. Bourg, Warren Y. Brockelman, David F. R. P. Burslem, Li-Wan Chang, Yang Chen, Jyh-Min Chiang, Chengjin Chu, Keith Clay, Susan Cordell, Mary Cortese, Jan den Ouden, Christopher Dick, Sisira Ediriweera, Erle C. Ellis, Anna Feistner, Amy L. Freestone, Thomas Giambelluca, Christian P. Giardina, Gregory S. Gilbert, Fangliang He, Jan Holík, Robert W. Howe, Walter Huaraca Huasca, Stephen P. Hubbell, Faith Inman, Patrick A. Jansen, Daniel J. Johnson, Kamil Kral, Andrew J. Larson, Creighton M. Litton, James A. Lutz, Yadvinder Malhi, Krista McGuire, Sean M. McMahon, William J. McShea, Hervé Memiaghe, Anuttara Nathalang, Natalia Norden, Vojtech Novotny, Michael J. O’Brien, David A. Orwig, Rebecca Ostertag, Geoffrey G. (‘Jess’) Parker, Rolando Pérez, Glen Reynolds, Sabrina E. Russo, Lawren Sack, Pavel Šamonil, I-Fang Sun, Mark E. Swanson, Jill Thompson, Maria Uriarte, John Vandermeer, Xihua Wang, Ian Ware, George D. Weiblen, Amy Wolf, Shu-Hui Wu, Jess K. Zimmerman, Thomas Lauber, Daniel S. Maynard, Thomas W. Crowther, Colin Averill   +74 more
doaj   +1 more source

Wildlife disturbances as a source of conspecific negative density-dependent mortality in tropical trees

Proceedings of the Royal Society B: Biological Sciences, 2020
Large vertebrates are rarely considered important drivers of conspecific negative density-dependent mortality (CNDD) in plants because they are generalist consumers. However, disturbances like trampling and nesting also cause plant mortality, and their impact on plant diversity depends on the spatial overlap between wildlife habitat ...
Matthew Scott Luskin, Daniel J. Johnson, Kalan Ickes, Tze Leong Yao, Stuart J. Davies   +4 more
openaire   +5 more sources

Effectiveness of a Novel Low‐Density Lipoprotein Apheresis Device Rheocarna in Patients Undergoing Hemodialysis With Chronic Limb‐Threatening Ischemia: A Single‐Center Retrospective Study

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic limb‐threatening ischemia (CLTI) is a severe form of lower‐extremity artery disease characterized by distal lesions and microcirculatory impairment, limiting revascularization efficacy. Rheocarna is a direct hemoperfusion low‐density lipoprotein (LDL) adsorption device with potential rheological and anti‐inflammatory ...
Kunihiro Ishioka, Takayasu Ohtake, Kei Ohmori, Chika Shibuya, Tomoki Tsukahara, Mizuki Yamano, Yasuhiro Mochida, Machiko Oka, Kyoko Maesato, Yusuke Tsukamoto, Hidekazu Moriya, Sumi Hidaka, Shuzo Kobayashi   +12 more
wiley   +1 more source

Response to Comment on “Conspecific Negative Density Dependence and Forest Diversity” [PDF]

Science, 2012
Dickie, Hurst, and Bellingham question some of the methods of our recent study on conspecific density dependence in forests. Here, we reanalyze our data set with the inclusion of joint absence plots of each species. We find that our results are robust to further analyses and that patterns of abundance and richness correlate with our measure of density ...
Daniel J. Johnson, Wesley T. Beaulieu, James D. Bever, Keith Clay   +3 more
openaire   +1 more source

Prognosis of Long‐Term Continuous Renal Replacement Therapy and the Impact of Combined Continuous Intravenous Sodium Infusion Therapy

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Patients requiring long‐term continuous renal replacement therapy (CRRT) generally have poor prognoses. This study evaluated whether adding continuous intravenous sodium infusion (cIVNa) is associated with improved hemodynamics and outcomes in patients undergoing long‐term CRRT for ≥ 7 days.
Akinori Yamaguchi, Atsuyoshi Mita, Kosuke Sonoda, Makoto Harada, Koji Hashimoto, Hiroshi Imamura, Yuji Kamijo   +6 more
wiley   +1 more source

Negative density dependence of seed dispersal and seedling recruitment in a Neotropical palm

Ecology Letters, 2014
AbstractNegative density dependence (NDD) of recruitment is pervasive in tropical tree species. We tested the hypotheses that seed dispersal isNDD, due to intraspecific competition for dispersers, and that this contributes toNDDof recruitment. We compared dispersal in the palmAttalea butyraceaacross a wide range of population density on Barro Colorado ...
Jansen, P.A., Visser, M.D., Joseph Wright, S., Rutten, G., Muller-Landau, H.C.   +4 more
openaire   +5 more sources