Results 11 to 20 of about 17,563 (212)

Analysis of xyloglucan metabolism mutants highlights the prominent role of xylose cleavage in seed dormancy. [PDF]

Plant J
SUMMARY Seed dormancy is an adaptive trait that delays germination until environmental conditions become favorable for seedling survival and growth. Germination has been shown to depend on the mechanical resistance strength of the covering layers (testa and endosperm) that counteracts the growth force of the embryo. Cell wall remodeling is essential in
Suzuki H, Savane P, Marion-Poll L, Sechet J, Frey A, Berger A, Belcram K, Borrega N, Seo M, Voxeur A, Mouille G, Marion-Poll A.   +11 more
europepmc   +2 more sources

Patterns of Technical Variation in Chimpanzee Termite Fishing Behavior in Mbam and Djerem National Park, Cameroon. [PDF]

Am J Primatol
ABSTRACT Chimpanzees exhibit considerable inter‐ and intra‐community variation in cognitively complex tool use behaviors, often attributed to social, genetic, and environmental factors. Termite fishing is a well‐documented chimpanzee tool‐using behavior that has been the subject of comparative research exploring behavioral variation between chimpanzee ...
Andres-Bray TC, Nichols I, Wilke T, Hafner M, Jordan A, Eysseric A, Borzym V, Abwe EE, Morgan B, Gonder MK.   +9 more
europepmc   +2 more sources

Assessment of Vegetation Habitat Types and Characteristics of Potential Nesting Trees for White-Backed Vultures (<i>Gyps africanus</i>) in Kempiana and Manyeleti Nature Reserves, Mpumalanga Province, South Africa. [PDF]

Ecol Evol
The study revealed that Scavenger Vultures (Gyps africanus) prefer to nest in mixed forests with grass rather than in grasslands, bare ground, or built‐up environments. They also choose tall, wide trees. These results confirm that these vultures do not choose their nesting trees at random, but according to specific criteria.
Hounnouvi FEK, Gandaho SM, Bain F, Hamming P, Thompson LJ.   +4 more
europepmc   +2 more sources

Activity and nocturnal home range size of male common hippopotamus in Kruger National Park, South Africa

African Journal of Ecology, Volume 61, Issue 4, Page 999-1005, December 2023., 2023
Abstract The common hippopotamus (Hippopotamus amphibius) is a driver of ecological processes in African savannah aquatic and terrestrial ecosystems. Recent studies have highlighted the ecological impacts of hippos in these systems; however, these lack behavioural data to contextualise their ecological inputs.
Camille J. A. Fritsch, Jarryd P. Streicher, Colleen T. Downs   +2 more
wiley   +1 more source

Tax and governance in rural areas: The implications of inefficient tax collection

Journal of International Development, Volume 35, Issue 7, Page 1892-1912, October 2023., 2023
Abstract While there has been increasing policy attention on broadening tax bases in low‐income countries, taxing citizens in rural areas often leads to neither revenue gains nor stronger accountability outcomes. Through case studies of Sierra Leone and Togo, we demonstrate that revenue collection in rural areas is highly inefficient, leading to little,
Vanessa van den Boogaard, Rachel Beach
wiley   +1 more source

Unmanned aerial vehicle outputs and associated field measurements of the herbaceous and tree layers of the Senegalese savannah

African Journal of Ecology, Volume 61, Issue 3, Page 730-735, September 2023., 2023
Abstract Unmanned aerial vehicles (UAVs) are widely used to assess the vegetation of an ecosystem. This report presents three data sets from UAVs used on a savannah‐type ecosystem in Senegal. Two data sets contain an orthomosaic and a surface and terrain digital model (UAV outputs), along with associated field measurements on the tree and herbaceous ...
Simon Taugourdeau, Fassinou Cofélas, Marina Bossoukpe, Ousmane Diatta, Ousmane Ndiaye, Antoine Diehdiou, Ange N'Goran, Alain Audebert, Emile Faye   +8 more
wiley   +1 more source

Interscalar maintenance: configuring an Indigenous ‘premium carbon product’ in northern Australia (and beyond)

Journal of the Royal Anthropological Institute, Volume 29, Issue 2, Page 306-325, June 2023., 2023
Abstract Mitigating climate change requires us to constrain combustion in a double sense: decreasing both the use of fossil fuels and the flammability of the biosphere. Fire management by Indigenous peoples in Australia's northern savannas has been presented as a solution to offset the former and assist with the latter, leading to the foundation of a ...
Timothy Neale
wiley   +1 more source

An An accurate molecular method to sex elephants using PCR amplification of Amelogenin gene

Pachyderm, 2020
The use of molecular methods to identify the sex of elephants from non-invasive samples is essential for studies of population dynamics and population genetics.
George Lohay
doaj   +1 more source

Evolution des flores et de la végétation Tertiaires en Afrique, au nord de PEquateur

Bothalia: African Biodiversity & Conservation, 1983
La repartition de la flore Tertiaire en Afrique, três différente de l’actuelle, se comprend si on tient compte de deux facteurs essentiels: la regression des mers épicontinentales vers le nord et la dérive du continent africain.
E. Boureau, M. Cheboldaeff-Salard, J. -C. Koeniguer, P. Louvet   +3 more
doaj   +1 more source

Incidence d’helminthoses chez le buffle d’eau en Amazonie orientale, Brésil

Revue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux, 1997
L'incidence des nématodes gastro-intestinaux a été étudiée sur trois groupes de veaux buffles d'eau (A, B, C) par le comptage des oeufs par gramme de fèces (OPG), par l'examen post-mortem et par l'identification des larves infestantes (L3) dans le ...
Hugo Didonet Láu
doaj   +1 more source