Results 121 to 130 of about 154,855 (300)
Journal of Fish Biology, EarlyView.Abstract Blue‐eyed red‐fin pleco Hypostomus soniae (family Loricariidae) presented a putative sex system XX/XY in early stage. Aiming to explore the inter‐populational karyotypic variation and proposed emergence of the XX/XY system, we studied 13 H. soniae individuals (6 males, 7 females) from the Tapajós River.
Luan Aércio Melo Maciel +6 more
wiley +1 more source
Revista U.D.C.A Actualidad & Divulgación CientíficaLos cultivos intercalados ofrecen beneficios significativos para la agricultura al fijar nitrógeno, proteger contra plagas y enfermedades, y optimizar la producción.
Diana María Sánchez-Olaya +2 more
doaj +1 more source
Foliar nutrient levels of native tree species from Central Amazonia. 2. Campina
, 1985 Adult leaves of 14 woody species were sampled in the campina at km 62 of the road Manaus - Caracaraí. The lamina were classified as to their size and analysed for N, P, K, Ca, Mg and Na. Comparing the foliar levels of the bioelements to relevant data for
Klinge, H.
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Journal of Fish Biology, EarlyView.Abstract This study aimed to investigate how exposure to elevated water temperature and metal concentration jointly affect the physiology of Amazonian fish. Aboard a research vessel in the Amazon, we evaluated the effects of water temperature (river T°C at 31.5°C and a + 4°C increase to 35.5°C) and of 3‐h copper (Cu) exposure (up to 600 μg/L) in ...
Anne Crémazy +6 more
wiley +1 more source
Halting Neotropical Deforestation: Do the Forest Principles Have What It Takes? [PDF]
, 1996 INTRODUCTION I crashed into the thick secondary growth, stopping suddenly to duck a certain branch in my path: a fat black bullet ant crawled along it with indifference, an attitude that would have quickly changed had I brushed up against him.
Royer, Matthew B.
core +1 more source
Amazonian drought of 2023: Environmental conditions relevant to fishes
Journal of Fish Biology, EarlyView.Abstract This paper provides a platform for the following studies within this Special Issue. ‘Ecophysiology of fishes in the two great tributaries of the Amazon in the Anthropocene’. It documents the water quality conditions and accompanying zooplankton community structure and biomass relative to fish health in the Rio Negro and Rio Solimões during the
Ora E. Johannsson +10 more
wiley +1 more source
A review of above ground necromass in tropical forests [PDF]
, 2012 Frolking, Steve +3 more
core +2 more sources
Journal of Fish Biology, EarlyView.Abstract This study evaluated the effects of the controlled flood pulse on diet composition, trophic niche breadth and feeding intensity of Archolaemus janeae, an electric knifefish species with a restricted distribution in the Amazon Basin. Monthly samples were collected from December 2020 to November 2021 in the Volta Grande stretch of the Xingu ...
Ana F. V. N. M. Costa +8 more
wiley +1 more source
Preliminary data on nutrient release from decomposing leaf litter in a Neotropical rain forest
, 1977 The release of nutrients (N, P, K, Ca, Mg, Na) from decomposing leaves during the dry season in a neotropical seasonal evergreen rain forest near Manaus, State of Amazonas, Brasil was measured estimating the nutrient amounts in leaf litter in June and ...
Klinge, H.
core
The start of sustainability in Amazonia? A new paradigm based on fertility for sustainable land management [PDF]
, 2008 In the Amazon, slash and burn is the most common technique used by American-Indians, small farmers and even big ranches to transform forests into rural landscapes.
Barbosa, Tienne +6 more
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