Results 51 to 60 of about 6,265,431 (122)

QUALIDADE DA ÁGUA E ÍNDICE DE ESTADO TRÓFICO NO RIO GUAMÁ, MUNICÍPIO DE BELÉM (PARÁ, BRASIL)

open access: yes, 2020
A água é um dos recursos naturais mais importantes do planeta, sendo o monitoramento ambiental uma ferramenta primordial para auxiliar na conservação qualitativa e quantitativa das propriedades físicas, químicas e biológicas da água.
Varela, Andrew Wallace Palheta   +6 more
core  

DETERMINACIÓN DEL ESTADO TRÓFICO DE LA LAGUNA DE AYARZA, UBICADA EN EL DEPARTAMENTO DE SANTA ROSA, REPÚBLICA DE GUATEMALA

open access: yesAgua, Saneamiento & Ambiente, 2022
La laguna de Ayarza, también nombrada “Lago Azul” por el color de sus aguas, se encuentra localizada al Norte del departamento de Santa Rosa (entre los municipios de Casillas y San Rafael Las Flores), a una altitud de 1,409 metros sobre el nivel del mar,
Dennis Salvador Argueta Mayorga
doaj  

Seasonal and Within‐Day Variation on Hummingbirds Visits and Dominance Hierarchy in a Brazilian Cerrado Area

open access: yesAustral Ecology, Volume 51, Issue 3, March 2026.
ABSTRACT Plant‐hummingbird interaction networks can be influenced by environmental conditions and resources, which vary seasonally and daily. We aimed to understand how variations in these parameters across these two temporal windows influence patterns of plant‐hummingbird interactions and hummingbirds dominance hierarchies in a Brazilian Cerrado ...
Jeane Lima‐Passos   +3 more
wiley   +1 more source

El estado trófico de la Laguna de Limoncocha en el período (febrero 2010 – enero 2011) [PDF]

open access: yes, 2011
Se realizó un estudio en la laguna de Limoncocha por el período de un año, desde el mes de febrero del 2010 hasta el mes de enero del 2011, el mismo que fue dividido en dos etapas.
Granizo Murgueytio, Fernando Andrés
core  

Patch and Landscape Predictors of Mammal Diversity and Their Trait‐Relationships in the Largest Atlantic Forest Island in Brazil

open access: yesBiotropica, Volume 58, Issue 2, March 2026.
Urbanization and habitat fragmentation reshape mammal communities on Santa Catarina Island, one of the largest Atlantic Forest islands in Brazil. Using camera traps across protected forest patches, we show that species richness declines with urban and unvegetated matrices, while abundance increases in smaller and more isolated fragments dominated by ...
Camila Rezende Ayroza   +6 more
wiley   +1 more source

UTILIZAÇÃO DO ÍNDICE DE ESTADO TRÓFICO PARA ANÁLISE DO GRAU DE TROFIA DO PARQUE AQUÍCOLA SUCUPIRA (LAGO DE PALMAS, TO) NA ESTAÇÃO SECA [PDF]

open access: yes, 2018
A aquicultura é a atividade que mais cresce dentre os setores de produção de alimentos, porém, sua prática pode causar impactos ambientais no ambiente aquático, caso não haja um plano de monitoramento eficiente.
Rosanova, Clauber   +5 more
core  

Unraveling the Phenology of the Liana Marcgravia longifolia: Temporal Patterns and Climatic Cues

open access: yesBiotropica, Volume 58, Issue 2, March 2026.
We monitored the reproductive phenology of the Amazonian liana Marcgravia longifolia J. F. Macbr (Marcgraviaceae) for 84 consecutive months in the Peruvian Amazon to quantify the timing, synchrony, and seasonality of flowering and ripe fruiting. Flower presence peaked in August with intermediate synchrony, while ripe fruit presence peaked in November ...
Alessandro Mainardi   +5 more
wiley   +1 more source

Evaluación espacial y estacional del estado trófico en el sistema estuarino Urías, Mazatlán, México [PDF]

open access: yes, 2020
The Urías estuary is a coastal lagoon located south of the city of Mazatlán. It’s considered the most urbanized system and one of the most impacted in the area due to anthropogenic activities; it’s the final recipient of domestic, industrial, aquaculture
Sánchez Rodríguez, Miguel Ángel   +1 more
core  

Low abundance of phytophagous nematodes under invasive exotic Pinus elliottii – enemy release and plant–soil feedbacks

open access: yesNew Phytologist, Volume 249, Issue 6, Page 3060-3071, March 2026.
Summary According to the enemy release hypothesis (ERH), the fitness of exotic plants and their capacity to become invasive in their area of introduction may partly be attributable to the loss of their natural enemies. Invasive species may also benefit from modifying soil attributes and thereby creating a positive soil–plant feedback.
Lynda S. C. Guerrero   +3 more
wiley   +1 more source

Evolución del estado trófico y estructura del fitoplancton de un lago somero de la región pampeana: laguna Sauce Grande (Pcia. de Buenos Aires, Argentina)

open access: yesBiología Acuática, 2014
La laguna Sauce Grande está ubicada en el suroeste de la provincia de Buenos Aires, Argentina, con el río Sauce Grande como afluente y efluente de la misma.
Noelia Leonor Cony   +2 more
doaj  

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