Results 121 to 130 of about 5,692 (227)

Nested archetypes of vulnerability in African drylands: where lies potential for sustainable agricultural intensification?

Environmental Research Letters, 2017
Food production is key to achieving food security in the drylands of sub-Saharan Africa. Since agricultural productivity is limited, however, due to inherent agro-ecological constraints and land degradation, sustainable agricultural intensification has ...
D Sietz, J C Ordoñez, M T J Kok, P Janssen, H B M Hilderink, P Tittonell, H Van Dijk   +6 more
doaj   +1 more source

Hydrological seasonality shapes microbial biomass and diversity in an equatorial estuarine mangrove

Limnology and Oceanography, Volume 71, Issue 6, June 2026.
Abstract Mangroves are pantropical marine forests rooted in soft sediments and subject to pronounced seasonal variability. However, the effects of these hydrological fluctuations on root‐associated prokaryotic communities remain poorly understood, particularly in underexplored regions like the Guianas.
Emma Jamon‐Haon, Cécile Militon, Adriana Spedicato, Emma Michaud, Gérard Thouzeau, Clément Gauchot, Jérémy Devesa, Olivier Grosso, Léa Sylvi, Sandrine Chifflet, Maud Fiard, Philippe Cuny   +11 more
wiley   +1 more source

The importance of remnant native vegetation of Amazonian submontane forest for the conservation of lizards

Brazilian Journal of Biology
Forest fragmentation affects animal population dynamics mainly by loss of habitat and disruption of animal movement. Lizard assemblages are affected by environmental changes, but, depending on their ecological needs, some species might be more vulnerable
DJ Silva, M Santos-Filho, GR Canale
doaj   +1 more source

Community composition mediates interannual shifts in pollinators' roles within networks

Nordic Journal of Botany, Volume 2026, Issue 6, June 2026.
Plant–pollinator networks are complex structures that describe interactions between plants and pollinators within ecological communities. Understanding how these networks are organized is crucial for the preservation of populations, communities, and ecosystem services, because network structure is linked to the function and resilience of communities ...
Io Kazantzidou, Carmelo Gómez‐Martínez, Miguel A. González‐Estévez, Amparo Lázaro   +3 more
wiley   +1 more source

Chebyshev Smoothing With Adaptive Block‐FSAI Preconditioners for the Multilevel Solution of Higher‐Order Problems With the Partition of Unity Method

Numerical Linear Algebra with Applications, Volume 33, Issue 3, June 2026.
ABSTRACT In this paper, we assess the performance of adaptive and nested factorized sparse approximate inverses as smoothers in multilevel V‐cycles, when smoothing is performed following the Chebyshev iteration of the fourth kind, for the efficient solution of linear systems arising from a conforming discretization of higher‐order partial differential ...
Pablo Jiménez Recio, Marc Alexander Schweitzer   +1 more
wiley   +1 more source

Correlation coefficient and nestedness in random networks.

, 2013
(Panel A): Correlation coefficient, , and nestedness for networks generated independently using the configuration model with nodes and and (from left to right) scale-free (with exponent ), Poissonian, and Gaussian () degree distributions.
Samuel Jonhson (460739), Virginia Domínguez-García (460740), Miguel A. Muñoz (145188)   +2 more
core   +1 more source

Stratified sampling enhances the understanding of bat–fruit networks in the southern Atlantic Forest

Oikos, Volume 2026, Issue 6, June 2026.
Few studies have sought to understand the vertical patterns of bat–fruit systems, and therefore, it is not possible to evaluate whether interpretations based on data collected from a single stratum adequately represent the interaction patterns of this system. In this context, we evaluated the dissimilarity in the assemblage of frugivorous bats, plants,
Karolaine Porto Supi, Thais Bastos Zanata, Daniela Aparecida Savariz Bôlla, Fernando Carvalho   +3 more
wiley   +1 more source

Patterns of Nestedness in Remote Polynesian Ant Faunas (Hymenoptera: Formicidae). [PDF]

, 2008
v. ill. 23 cm.QuarterlyThe entire ant faunas of remote Polynesian islands consist of introduced species. An important question concerning the assembly of Pacific island ant faunas is whether these species are a random assortment of the available species ...
Morrison, Lloyd W.
core  

Ecto- and endoparasites of common reedbuck, Redunca arundinum, at 2 localities in KwaZulu-Natal Province, South Africa: community and network structure

Parasitology
Parasite community structure is governed by functional traits of hosts and parasites. Notably, parasite populations and communities respond to host social and spatial behaviour.
Kerstin Junker, Joop Boomker, Ivan G. Horak, Boris R. Krasnov   +3 more
doaj   +1 more source

Floral resource diversity drives spatiotemporal variation in plant–pollinator network structure

Oikos, Volume 2026, Issue 6, June 2026.
Mechanisms underlying community assembly, including those related to species interactions, vary across space and time. Plant–pollinator networks exemplify these dynamics, where link rewiring and turnover mediate adaptations to environmental changes. Bees rely on diverse floral resources (e.g.
Caio S. Ballarin, Felipe W. Amorim, Blanca Arroyo‐Correa, Pedro Jordano   +3 more
wiley   +1 more source