Results 81 to 90 of about 75,567 (294)

Regeneração de Psychotria suterella Müll. Arg. (Rubiaceae) em uma paisagem fragmentada de Floresta Atlântica no Sudeste do Brasil. Regeneration of Psychotria suterella Müll. Arg. (Rubiaceae) in a fragmented landscape of the Atlantic Forest in southeastern Brazil. [PDF]

Revista do Instituto Florestal, 2013
A fragmentação de florestas pode afetar processos demográficos relacionados à regeneração de populações de plantas. O objetivo desse estudo foi verificar se a regeneração de populações de Psychotria suterella, espécie arbustiva comum de sub-bosque na ...
Daniela Fessel BERTANI, Flavio Antonio Maës dos SANTOS   +1 more
doaj  

Ocorrência e distribuição de pteridófitas na reserva florestal Walter Egler, Amazônia Central, Brasil Occurrence and distribution of the pteridophytes in the Walter Egler Forest reserve, Central Amazonian, Brazil

Acta Amazonica, 2003
Na Reserva Florestal Walter Egler, localizada a 64 km de Manaus, no município de Rio Preto da Eva, foi investigada a ocorrência de Pteridófitas ao longo de uma toposseqüência. O grupo ocorre nos três ambientes observados na área (baixio, vertente e platô)
Maria Cristina de Souza, Jean-Louis Guillaumet, Izonete de Jesus Araujo Aguiar   +2 more
doaj   +1 more source

Dispersal and establishment both limit colonization during primary succession on a glacier foreland [PDF]

, 2009
Plant colonization can be limited by lack of seeds or by factors that reduce establishment. The role of seed limitation in community assembly is being increasingly recognized, but in early primary succession, establishment failure is still considered ...
del Moral, Roger, Jones, Chad C.
core   +1 more source

Spatiotemporal Fire Patterns and Post‐fire Forest Change in Peru (2000–2021)

Land Degradation &Development, EarlyView.
ABSTRACT Fire is increasingly more frequent and severe in many tropical regions, leading to significant forest loss, diminished biodiversity, and reduced Nature's contributions to people (NCPs). In this study, we analyzed the spatiotemporal patterns of fire in Peru and its regions, focusing on: (1) burned area, (2) size, and (3) number of fires, using ...
Maricel Móstiga, Dolors Armenteras, Jordi Vayreda, Javier Retana   +3 more
wiley   +1 more source

Monitoring the understory in eucalyptus plantations using airborne laser scanning

Scientia Agricola, 2020
In eucalyptus plantations, the presence of understory increases the risk of fires, acts as an obstacle to forest operations, and leads to yield losses due to competition. The objective of this study was to develop an approach to discriminate the presence
Alessandra Morais Melo, Cristiano Rodrigues Reis, Bruno Ferraz Martins, Tamires Mousslech Andrade Penido, Luiz Carlos Estraviz Rodriguez, Eric Bastos Gorgens   +5 more
doaj   +1 more source

Two new Lejeuneaceae records for the Colombian liverwort flora [PDF]

, 2004
Two epiphyllous Lejeuneaceae, Cololejeunea surinamensis and Drepanolejeunea polyrhiza, previously known from Amazonian Brazil, are recorded for the first time in Colombia.
Benavides, Juan C.
core  

Rediscovery of Passiflora clypeophylla (subgenus Decaloba): a highly threatened and narrow endemic species found within a karstic canyon in Guatemala

Nordic Journal of Botany, EarlyView.
Passiflora clypeophylla, an endemic species to the Guatemalan karstic forests last seen in 1889 and deemed extinct, was rediscovered in the Department of Alta Verapaz, east of Cobán. The species was known only from a single specimen hailed from the type locality, Rubel Cruz, where it has been found again. An additional location has been identified in a
J.R. Kuethe, Dennis I. Medina, Saban Sequen, Maura L. Quezada   +3 more
wiley   +1 more source

Typification and rediscovery of Phialacanthus griffithii Benth. & Hook.f. (Acanthaceae) in Arunachal Pradesh, India

Nordic Journal of Botany, EarlyView.
Phialacanthus griffithii Benth. & Hook.f. (Acanthaceae), a species long thought unrecorded, was rediscovered in 2023 after a 160‐year gap in the Upper Dibang Valley, Eastern Himalaya, Arunachal Pradesh. The study presents a comprehensive taxonomic account including lectotypification, morphological description, phenology, habitat ecology, distribution ...
Umeshkumar L. Tiwari
wiley   +1 more source

A taxonomic update of the genus Clavija (Theophrastaceae) in Colombia and Ecuador

Nordic Journal of Botany, EarlyView.
Two species of Clavija are described as new to science: C. neivea (Department Huila Colombia), which is similar to C. pungens (Willd. ex Roem. & Schult.) Decne. of coastal Ecuador, but distinguished by its chiefly elliptic leaf blades with less serrate margins and 4‐merous flowers; C. zamorae (Prov.
Bertil Ståhl
wiley   +1 more source

Impacts of topography on spatial variability of temperate understory biomass in closed forest: a case study of Northeast China Tiger and Leopard National Park

Guangxi Zhiwu
To investigate the impact of topography on understory biomass, this study employed a nested design and conducted surveys in the Northeast China Tiger and Leopard National Park, involving a total of 138 plots within closed forests, comprising 1 685 plant ...
WANG Le1,2, MOU Pu2,3, WANG Tianming2,3
doaj   +1 more source