Results 71 to 80 of about 6,726 (285)

Invasive species invoke a lifetime of trophic change in native stream fishes

open access: yesEcosphere, Volume 16, Issue 6, June 2025.
Abstract Trophic interactions operate across the lifetime of an individual organism, yet our understanding of these processes is largely limited to a single life stage or moment in time. Management and conservation implications of this knowledge gap are particularly important, given the mounting number, spread, and ecological impacts of invasive ...
Jessica O. Diallo, Julian D. Olden
wiley   +1 more source

Integrative species delimitation based on COI, ITS, and morphological evidence illustrates a unique evolutionary history of the genus Paracercion (Odonata: Coenagrionidae)

open access: yesPeerJ, 2021
Paracercion are common ‘blue and black’ colored damselflies. We explore the species boundaries of Paracercion (Odonata: Coenagrionidae) using ABGD, bPTP, GMYC and Distance-based clustering.
HAI-GUANG Zhang, Xin Ning, Xin Yu, W. Bu
semanticscholar   +1 more source

MATE RECOGNITION AND MECHANICAL ISOLATION IN ENALLAGMA DAMSELFLIES (ODONATA: COENAGRIONIDAE) [PDF]

open access: yesEvolution, 1982
The concept of mechanical isolation, first mooted by Dufour (1844), became popular when Dobzhansky (1940, 1951) developed fully the theory of speciation by reinforcement. Very little empirical evidence was produced however, and as a result, both Mayr (1963, 1970) and Dobzhansky (1970) concluded that mechanical isolation was relatively unimportant in ...
Hugh M. Robertson, Hugh E. H. Paterson
openaire   +3 more sources

Gynandromorphs in the genera Ophiogomphus Selys, 1854 and Ischnura Charpentier, 1840 (Odonata: Gomphidae,Coenagrionidae) [PDF]

open access: yes, 2009
A gynandromorph of Ophiogomphus smithi Tennessen and Vogt from Wisconsin and a gynandromorph of Ischnura hastata (Say) from Alabama are described. The specimens appear to be bilateral in that they display mostly left/right separation of male and female ...
Tennessen, K. J.
core  

Behavioural Studies of Enallagma vansomereni (Odonata: Zygoptera, Coenagrionidae) in Qena Governorate (Egypt)

open access: yesEgyptian Academic Journal of Biological Sciences. A, Entomology
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Ibrahim I. Mohamed
semanticscholar   +1 more source

The Role of Artificial Lakes Located in Forests in the Context of Small Retention, Biodiversity and Climatic Changes—Evidence From Southern Poland

open access: yesEcology and Evolution, Volume 15, Issue 1, January 2025.
The model of plant associations showed the occurrence of 24 species of plants within nine plant assemblages in the Phragmitetea and Potametea classes of associations. Despite human activities, lake condition, as assessed by the ESMI index or the biocenotic diversity indices, is good.
Rafał Starzak   +3 more
wiley   +1 more source

Diversity of Odonata (Insecta) in lotic systems from Serra da Bodoquena, Mato Grosso do Sul State, Brazil

open access: yesRevista Brasileira de Entomologia, 2011
Diversity of Odonata (Insecta) in lotic systems from Serra da Bodoquena, Mato Grosso do Sul State, Brazil. A systematic survey was carried out in four lotic systems from Serra da Bodoquena, the largest natural forests of the State, from August 2007 to ...
Marina Schmidt Dalzochio   +2 more
doaj   +1 more source

PANGIUM SP. LEAF EXTRACT AS BIOPESTICIDE ON BRASSICA OLERACEA PLANT IN NORTH SULAWESI PROVINCE, INDONESIA [PDF]

open access: yesScientific Papers Series : Management, Economic Engineering in Agriculture and Rural Development, 2021
Pangium sp. has the potential to be developed as a biopesticide because it has the ability to inhibit the activity of several types of insect pests. In this study, pangium leaf extract and pesticide were applied to Brassica oleraceae cabbage farms; to ...
Eva L. BAIDENG   +5 more
doaj  

Fluminagrion gen. nov. for Acanthagrion taxaense Santos, 1965, from Brazil (Odonata: Coenagrionidae) [PDF]

open access: yes, 2013
A new genus of Coenagrionidae, Fluminagrion, from Rio de Janeiro, Brazil is described, diagnosed, and illustrated, based on examination of the type series and additional specimens of Acanthagrion taxaense Santos, 1965, deposited in the collection of MNRJ/
Anjos Dos Santos, Danielle   +2 more
core   +2 more sources

Unraveling Biogeographic Boundaries Within the Sierra Madre Oriental, México: An Endemicity Analysis Using a Taxonomically Diverse Dataset

open access: yesEcology and Evolution, Volume 15, Issue 1, January 2025.
We provide boundaries of the Sierra Madre Oriental in Mexico through a multi‐taxa endemicity analysis. ABSTRACT The Sierra Madre Oriental (SMO) is a significant mountain range and one of Mexico's 14 biogeographical provinces. Its delimitation has been debated.
Irene Goyenechea Mayer‐Goyenechea   +5 more
wiley   +1 more source

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