Results 81 to 90 of about 100,451 (336)

Portulaca eggliana (Portulacaceae), a new species from the Brazilian Amazonian savannas

open access: yesNordic Journal of Botany, EarlyView.
A new species of Portulacaceae from the Amazonian savannas of northern Brazil is herein described and illustrated. Portulaca eggliana is morphologically related to P. umbraticola, but differs in the number of involucral leaves, sepal morphology, bracteole shape, and seed surface.
José Roberto Ferraz   +4 more
wiley   +1 more source

Biomass Characteristics of Tropical Montane Rain Forest in National Park of Hainan Tropical Rainforest

open access: yesLand
Forest biomass, as a carrier of carbon, is an important indicator for judging forest productivity, stability and sustainable development capacity. Using the survey data of sample plots in eight forest areas in central Hainan, the biomass distribution of ...
Tingtian Wu   +7 more
doaj   +1 more source

Strong intraspecific trait variation in a tropical dominant tree species along an elevational gradient

open access: yesPlant Diversity, 2020
Functional trait variation of plant species includes both inter- and intraspecific variation; however, trait-based plant ecology generally considers only interspecific variation while ignoring intraspecific variation.
Wumei Xu, Kyle W. Tomlinson, Jie Li
doaj   +1 more source

Microhabitat characteristics of the critically endangered big‐headed turtle Platysternon megacephalum

open access: yesEcology and Evolution, 2023
Understanding the microhabitat requirements of an animal is vital for ensuring the success of targeted conservation and microhabitat restoration measures.
Fanrong Xiao   +4 more
doaj   +1 more source

New records and additions to the hepatic flora of Uganda 2 [PDF]

open access: yes, 1999
82 liverwort taxa are recorded from Uganda, of which 24 are new to the flora of the country. Colura hedbergiana, Colura kilimanjarica and Harpalejeunea fischeri found on Mt. Elgon, were previously known only from their type locality on Mt. Kilimanjaro or
Arnstein Lye, Kåre, Pócs, Tamás
core  

Are patterns of fine-scale spatial genetic structure consistent between sites within tropical tree species? [PDF]

open access: yes, 2018
JRS was funded by the Swiss National Science Foundation (SNF) (http://www.snf.ch/en/Pages/default.aspx) grant number PDFMP3_132479 / 1 awarded to JG.
Burslem, David F. R. P.   +9 more
core   +2 more sources

Taxonomy and diversity of Marcgraviaceae, north of the São Francisco river, northeast Brazil

open access: yesNordic Journal of Botany, EarlyView.
This study provides a comprehensive assessment of Marcgraviaceae species diversity north of the São Francisco river in northeastern Brazil, analyzing species richness and distribution patterns across 384 000 km² of phytogeographic domains. Through field collections, herbarium studies (both physical and digital), and detailed morphological analyses, we ...
Thales Carvalho   +4 more
wiley   +1 more source

The frequency and importance of polyploidy in tropical rainforest tree radiations. [PDF]

open access: yesNew Phytol
Summary The presence of more than two copies of the genome in an organism, termed ‘polyploidy’, is a crucial force in plant evolution, generating genetic, phenotypic and ecological diversity. [Correction added on 22 January 2026, after first online publication: the preceding sentence has been corrected.] The Amazonian tree flora is the most species ...
Schley RJ   +9 more
europepmc   +3 more sources

Additions to the bryophyte floras of Réunion and Mauritius (East African Islands) [PDF]

open access: yes, 2002
Interesting records of bryophytes from the East African Islands Réunion and Mauritius are reported. Anomodon tristis (Ces.) Sull. & Lesq. is reported with certainty for Africa. First records for the East African Islands of Calliergonella cuspidata (Hedw.)
Müller, Frank
core  

Phosphorus scarcity contributes to nitrogen limitation in lowland tropical rainforests [PDF]

open access: hybrid, 2023
Helena Vallicrosa   +17 more
openalex   +1 more source

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