Results 31 to 40 of about 6,808 (260)

Afforestation of tropical savannas has mixed consequences for bird communities

Conservation Science and Practice
Land‐use change is a key driver of tropical savanna biodiversity and one such widespread change is the conversion of ancient (i.e., old‐growth) savannas to tree plantations.
Siddhant Mhetre, Prabhav Benara, Yash Gaikwad, Aryan S. Deore, Avishkar Munje, Ashish N. Nerlekar   +5 more
doaj   +1 more source

Morphological variation in atlas and axis of Neotropical spiny rats (Rodentia, Echimyidae)

The Anatomical Record, EarlyView.
Abstract The unique morphologies of the first two cervical vertebrae, the atlas and axis, represent a significant innovation in mammalian evolution. These structures support the weight of the head and enable intricate movements of the head and neck.
Thomas Furtado da Silva Netto, João Felipe Leal Kaiuca, Adriana Itatí Olivares, William Corrêa Tavares   +3 more
wiley   +1 more source

Climate, fire, and anthropogenic disturbance determine the current global distribution of tropical forest and savanna

Environmental Research Letters
Tropical forest and savanna biomes are pivotal in the functioning of the Earth system. Both are biodiverse and under increasing threat due to land clearing and anthropogenic climate change, and play important roles in the global carbon cycle, through ...
Grant J Williamson, David YP Tng, David MJS Bowman   +2 more
doaj   +1 more source

Evidence for adaptive explanations of semelparity in animals

Biological Reviews, EarlyView.
ABSTRACT Semelparity, the reproductive strategy of reproducing once, is widespread but uncommon in animals. Classes of models to explain the evolution of semelparity are based either on age structure and mortality schedules – demographic models in which high post‐reproductive mortality risk favours high reproductive effort and semelparity results from ...
Diana O. Fisher, Roberto Salguero‐Gómez   +1 more
wiley   +1 more source

Mummy studies and parasite infections in Brazil

Journal of Biological Research, 2005
Mummified bodies are unexpected finds in archaeological sites of tropical countries. Rain forests and humid climate provide poor environmental conditions to preserve organic remains. However, South American tropical environments also include dry savanna,
Adauto Araújo, Karl Reinhard, Alexandre Fernandes, Luciana Sianto, Marcelo Luiz Carvalho Gonçalves, Sheila Maria Mendonça de Souza, Luiz Frenando Ferreira   +6 more
doaj   +1 more source

Biomass, Morphology, and Dynamics of the Fine Root System Across a 3,000-M Elevation Gradient on Mt. Kilimanjaro

Frontiers in Plant Science, 2020
Fine roots (≤2 mm) consume a large proportion of photosynthates and thus play a key role in the global carbon cycle, but our knowledge about fine root biomass, production, and turnover across environmental gradients is insufficient, especially in ...
Natalia Sierra Cornejo, Dietrich Hertel, Joscha N. Becker, Andreas Hemp, Christoph Leuschner   +4 more
doaj   +1 more source

Pedo‐Climatic Controls on Soil Health Recovery Across Cultivation Chronosequences: Hydraulic Conductivity as a Potential Link Between Soil Structure, Microbial Biomass, and Nutrient Availability

Land Degradation &Development, EarlyView.
ABSTRACT Long‐term cultivation can improve soil health, but recovery may not follow the same pathway across contrasting soil and climate conditions. A key unresolved question is whether soil health recovery is mainly associated with the release of physical–chemical constraints or with the gradual rebuilding of carbon, microbial biomass, and nutrient ...
Manal A. Alnaimy, Manas B. Kezekia, Khaled G. Soliman, EL‐Sayed A. EL‐Naka, Ahmed Salah Elrys   +4 more
wiley   +1 more source

The Vegetation of the Australian Tropical Savannas [PDF]

Pacific Conservation Biology, 2002
THE publication is a CD containing 1:2 000 000 scale maps in three sheets and an accompanying technical report produced by members of the Queensland Herbarium. It is the result of a collaboration of State, Territory and Federal agencies and researchers. The full list of authors include Fox, I. D., Neldner, V. J., Wilson, G. W., Bannink, P.
openaire   +1 more source

A new combination in Strophopappus (Asteraceae, Vernonieae, Lepidaploinae)

Nordic Journal of Botany, EarlyView.
Revisions of herbarium collections reveal a new combination in Strophopappus (Asteraceae, Vernonieae, Lepidaploinae). Strophopappus comprises nine species occurring in South America, eight of which are endemic to Brazil. Currently, Vernonia riedeliana is treated as a synonym of Strophopappus bicolor.
Danielle Remor, Carolina M. Siniscalchi, Benoît Loeuille   +2 more
wiley   +1 more source

Carbon balance of a tropical savanna of northern Australia [PDF]

Oecologia, 2003
Through estimations of above- and below-ground standing biomass, annual biomass increment, fine root production and turnover, litterfall, canopy respiration and total soil CO(2) efflux, a carbon balance on seasonal and yearly time-scales is developed for a Eucalypt open-forest savanna in northern Australia.
Xiaoyong, Chen, Lindsay B, Hutley, Derek, Eamus   +2 more
openaire   +2 more sources