Results 31 to 40 of about 7,105 (252)

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

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

Hot and cold deserts as eco‐evolutionary arenas for understanding plant resistance to multiple abiotic stressors

Biological Reviews, EarlyView.
ABSTRACT During their long evolutionary history, land plants have evolved a range of adaptations to different abiotic stressors. These help explain present‐day diversity and distribution patterns, as well as the potential resilience of natural and agricultural systems to a changing climate. Most previous research has focused on adaptation to individual
Marc Fradera‐Soler, Natasha Barbolini, Anže Žerdoner Čalasan, Marian Schubert, Catarina Rydin, Olwen M. Grace, Aelys M. Humphreys   +6 more
wiley   +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

Resolving the biome debate: ecological and palaeo‐data concur that the extensive tree‐limited grassy biomes of central and north‐western Madagascar are largely anthropogenic

Biological Reviews, EarlyView.
ABSTRACT For millennia, human activities have transformed ecosystems globally. Determining which landscapes are predominantly anthropogenic is crucial to conservation and habitat restoration. Madagascar, a critically‐threatened biodiversity hotspot, is a prominent example.
Grant S. Joseph, Sean Hixon, Colleen L. Seymour, Laurie R. Godfrey, Miguel Pedrono, Karen E. Samonds, Andrinajoro R. Rakotoarivelo, Brooke E. Crowley   +7 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

Carbon Markets and Natural Climate Solutions in Brazil: Institutional Coherence Across Biodiversity, Land‐Use and Territorial Governance

Environmental Policy and Governance, EarlyView.
ABSTRACT This study examines how natural climate solutions (NCS) are institutionalised through carbon market governance in tropical contexts, focusing on Brazil's emerging Emissions Trading System (SBCE). It contributes to debates on the effectiveness, equity and governance of nature‐based climate action by analysing how carbon market instruments ...
Fátima de Souza Freire, Edilson Bezerra da Silva   +1 more
wiley   +1 more source

Multi‐environment trials and participatory validation identify soybean genotypes with mechanized harvest‐enabling traits in Ghana

Agrosystems, Geosciences & Environment
Soybean (Glycine max [L.] Merr.) harvesting in Ghana is predominantly manual, and labor shortages frequently delay harvest beyond physiological maturity, exacerbating shattering losses.
Charles Nelimor, Francisca Addae‐Frimpomaah, Francis Kusi, Duut Matey, Ophelia Asirifi Amoako, Flora Christine Amagloh, Prince Maxwell Etwire, Peter Asungre, Abush Tesfaye Abebe, Maryke Labuschagne, Isaac Kodzo Amegbor   +10 more
doaj   +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

Investigating the Impact of El Niño–Southern Oscillation on Rangeland Productivity in the Limpopo Province, South Africa

International Journal of Climatology, EarlyView.
This study investigated ENSO effects on rainfall variability and rangeland productivity across Limpopo Province, South Africa, using DMP and ONI data for 1999–2024. Productivity was higher in eastern and southern regions and lower in northern and western regions.
Phumzile Maluleke, Mokhele E. Moeletsi, Mitsuru Tsubo   +2 more
wiley   +1 more source