Results 21 to 30 of about 1,448 (183)

Land use conversion to agriculture impacts biodiversity, erosion control, and key soil properties in an Andean watershed

open access: yesEcosphere, Volume 13, Issue 3, March 2022., 2022
Abstract The conversion of natural vegetation to agricultural land uses in mountainous Andean landscapes threatens an array of key ecological processes and ecosystem services (ES). In protected areas and buffer regions that provide water to cities, it is critical to understand how interactions between plants and soil communities sustain a range of ...
Víctor Galindo   +4 more
wiley   +1 more source

PHYSIOLOGICAL EFFECTS OF PROFENOFOS INSECTICIDE TOWARDS CONSUMPTION RATE 6 AND ASSIMILATION EFFICIENCY OF COW – DUNG BY EARTHWORMS 7 PONTOSCOLE CORETHRURUS FR. MULL

open access: yesBiovalentia: Biological Research Journal, 2020
The purpose of this research is to determined the effect of insecticide profenofos to the rate of consumption and assimilation efficiency of cow- dung by earthworms Pontoscolex corethrurus Fr. Mull.
Erwin Nofyan   +3 more
doaj   +1 more source

Unraveling the dietary diversity of Neotropical top predators using scat DNA metabarcoding: A case study on the elusive Giant Otter

open access: yesEnvironmental DNA, Volume 3, Issue 5, Page 889-900, September 2021., 2021
A multi‐marker scat DNA metabarcoding approach was used to examine the dietary diversity of the world's largest and rarest otter, the iconic giant otter (Pteronura brasiliensis) from fecal DNA. The combined use of highly discriminant markers (COI and 12S) and of local reference databases of DNA barcodes offered a high accuracy of taxonomic assignments ...
Erwan Quéméré   +9 more
wiley   +1 more source

Oligochaeta da Estação Ecológica de Maracá, Roraima, Brasil [PDF]

open access: yesActa Amazonica, 1990
É apresentada uma lista das espécies de minhocas da Estação Ecológica de Maracá (Roraima, Brasil) e uma chave de identificação baseada em caracteres externos. Novas ocorrências são indicadas para as Glossoscolecidae: Pontoscolex (Meroscolex) raraimensis,
Gilberto Righi
doaj   +1 more source

EARTHWORM ACTIVITY IN FOREST AND SAVANNA SOILS NEAR BOA VISTA, RORAIMA, BRAZIL [PDF]

open access: yesActa Amazonica, 1994
From May to December, 1992 we studied the earthworm activity, as part of the ECOFIT Program at Surrão ( 30km from Boa Vista), verifying the duration of the activity and quantifying it through the casts deposited on the soil surface.
Rafael Torquemada GUERRA
doaj   +1 more source

STUDY OF PRODUCTION AND VIABILITY COCOON OF Pontoscolex corethrurus FR.MULL AT VARIOUS CONCENTRATIONS OF CARBARYL INSECTICIDES

open access: yesBiovalentia: Biological Research Journal, 2019
Research on the Study of Cocoon Production and Viability of Pontoscolex corethrurus Fr. Mull at various concentrations of Karbaril insecticide was carried out in July to October 2019, at the Laboratory of Animal Physiology, Department of Biology, Faculty
Erwin Nofyan   +3 more
doaj   +1 more source

Earthworms from Mato Grosso, Brazil, and new records of species from the state Minhocas do Mato Grosso e novos registros de espécies do estado

open access: yesPesquisa Agropecuária Brasileira, 2009
The objective of this work was to undertake a qualitative assessment of earthworm diversity in areas under human influence, in a region of Cerrado-Pantanal-Amazon rainforest transition, in the state of Mato Grosso, Brazil.
Marie Luise Carolina Bartz   +2 more
doaj   +1 more source

ESTUDO PRELIMINAR DA INFLUÊNCIA DA UMIDADE DO SOLO SOBRE A REPRODUÇÃO DE PONTOSCOLEX CORETHRURUS (Glossoscolecidae, Oligochaeta). [PDF]

open access: yesActa Amazonica, 1983
Resumo Neste estudo preliminar tenta-se verificar se o fator ambiental umidade do solo atua como fator limitante na reprodução de Pontoscolex corethrurus (Glo-soscolecidae, Oligochaeta).
José Augusto do Nascimento Ferraz   +1 more
doaj   +1 more source

Phylogenomic analyses reveal a Palaeozoic radiation and support a freshwater origin for clitellate annelids

open access: yesZoologica Scripta, Volume 49, Issue 5, Page 614-640, September 2020., 2020
Abstract Clitellata is a major clade of Annelida comprising nearly all freshwater and terrestrial annelids as well as several marine species. We investigated clitellate phylogenetic relationships using transcriptomes sampled from 74 taxa (64 clitellates and 10 polychaetes), including multiple representatives of nearly all major clitellate higher taxa ...
Christer Erséus   +7 more
wiley   +1 more source

Modificaciones químicas inducidas por dos especies de lombrices geófagas en suelos de Veracruz, México. [PDF]

open access: yes, 2015
Dos lombrices tropicales, una exótica (Pontoscolex corethrurus) y otra nativa (Glossoscolecidae sp.) de Veracruz, México, fueron cultivadas en condiciones de laboratorio para colectar sus respectivos turrículos (deyecciones) cada 48 horas, medir su tasa ...
BAROIS, I.   +3 more
core   +1 more source

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