Results 21 to 30 of about 58,137 (262)

Updating records of Squatina aculeata (Elasmobranchii: Squatiniformes: Squatinidae) in the Mediterranean Sea [PDF]

open access: yesActa Ichthyologica et Piscatoria, 2020
Background. The decline of the populations of the three Critically Endangered species Squatina aculeata Cuvier, 1829, Squatina oculata Bonaparte, 1840, and Squatina squatina (Linnaeus, 1758) in the Mediterranean basin is mainly attributed to ...
B. Zava   +3 more
doaj   +3 more sources

Sedum ichangensis, a new species of Crassulaceae from Hubei, China [PDF]

open access: yesPhytoKeys, 2019
Sedum ichangensis sp. nov., from Yichang, Hubei province, central China, is described and illustrated. The new species is similar to S. elatinoides and S.
Yu-Bing Wang, Xing-Jun Xiong
doaj   +3 more sources

Spintherobolus papilliferus in the rio Ribeira de Iguape basin: implications for the biogeography and conservation of an endangered species (Ostariophysi: Characiformes) [PDF]

open access: yesNeotropical Ichthyology, 2023
Spintherobolus papilliferus is an endangered characid endemic of the Atlantic Rainforest, known from sparse locations in the upper rio Tietê basin around the metropolitan area of São Paulo city, and from an affluent of rio Itapanhaú, a coastal stream in ...
George M. T. Mattox   +5 more
doaj   +1 more source

Two new localities of the endangered fish Systomus martenstyni (Kottelat & Pethiyagoda, 1991) (Teleostei: Cyprinidae) found in Sri Lanka [PDF]

open access: yesCheck List, 2015
Systomus martenstyni is an endemic and endangered fish of Sri Lanka. This species was earlier known to be restricted to the Amban Ganga River basin. Recently two populations of S.
Shalini Rajakaruna   +4 more
doaj   +3 more sources

Biosurfactant producing multifarious Streptomyces puniceus RHPR9 of Coscinium fenestratum rhizosphere promotes plant growth in chilli

open access: yesPLoS ONE, 2022
The present study involves isolation of Streptomyces spp. from rhizosphere of Coscinium fenestratum Gaertn, an endangered medicinal plant from Western Ghats of Karnataka, India.
Polapally Ravinder   +10 more
doaj   +2 more sources

Three new caespitose species of Senecio (Asteraceae, Senecioneae) from South Peru

open access: yesPhytoKeys, 2014
Three new species of the genus Senecio (Asteraceae, Senecioneae) belonging to S. ser. Suffruticosi subser. Caespitosi were discovered in the tributaries of the upper Tambo River, Moquegua Department, South Peru.
Daniel Montesinos Tubée
doaj   +1 more source

A Stage-Structured, Spatially Explicit Migration Model for Myotis Bats: Mortality location affects system dynamics

open access: yesLetters in Biomathematics, 2014
Bats are ecologically and economically important species because they consume insects, transport nutrients, and pollinate flowers. Many species of bats, including those in the Myotis genus, are facing population decline and increased extinction risk ...
Richard A. Erickson   +4 more
doaj   +1 more source

Reassessment of the Genus Salacia under IUCN Threatened Categories in Sri Lanka

open access: yesCeylon Journal of Science, 2019
Salacia comprises of five species in Sri Lanka S. acuminatissima, S. chinensis, S. diandra, S. oblonga and S. reticulata while around two hundred species are distributed in tropical countries worldwide.
W. I. N. S. Senevirathne   +3 more
doaj   +1 more source

Multi-Class Parrot Image Classification Including Subspecies with Similar Appearance

open access: yesBiology, 2021
Owing to climate change and human indiscriminate development, the population of endangered species has been decreasing. To protect endangered species, many countries worldwide have adopted the CITES treaty to prevent the extinction of endangered plants ...
Woohyuk Jang, Eui Chul Lee
doaj   +1 more source

Monitoring of the Endangered Cave Salamander Speleomantes sarrabusensis

open access: yesAnimals, 2023
In this study, we performed the first monitoring activities on one of the most endangered amphibians in Europe, the Sette Fratelli cave salamander Speleomantes sarrabusensis.
Roberto Cogoni   +3 more
doaj   +1 more source

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