Results 21 to 30 of about 123,662 (292)

Protosiphonorhinus patrickmuelleri gen. et sp. nov., the first fossil member of the sucking millipede family Siphonorhinidae (Colobognatha, Siphonophorida) described from Cretaceous Myanmar amber [PDF]

open access: yesEvolutionary Systematics
Millipedes (Diplopoda) are an abundant group of fossilized terrestrial arthropods throughout the Palaeozoic Era. However, there is a gap in the Mesozoic Period with only slightly more than a dozen fossils known, until more recent fossil records – mainly ...
Leif Moritz   +2 more
doaj   +3 more sources

First records of the Hymenoptera superfamilies and families Mymarommatoidea: Mymarommatidae and Stephanoidea: Stephanidae in Georgia [PDF]

open access: yesCaucasiana
We record for the first time the families Stephanidae and Mymarommatidae and the corresponding superfamilies Stephanoidea and Mymarommatoidea in Georgia.
Tobias Salden   +5 more
doaj   +3 more sources

Transcriptomics provides a robust framework for the relationships of the major clades of cladobranch sea slugs (Mollusca, Gastropoda, Heterobranchia), but fails to resolve the position of the enigmatic genus Embletonia

open access: yesBMC Ecology and Evolution, 2021
Background The soft-bodied cladobranch sea slugs represent roughly half of the biodiversity of marine nudibranch molluscs on the planet. Despite their global distribution from shallow waters to the deep sea, from tropical into polar seas, and their ...
Dario Karmeinski   +7 more
doaj   +1 more source

Disturbance and change in biodiversity [PDF]

open access: yesPhilosophical Transactions of the Royal Society B: Biological Sciences, 2010
Understanding how disturbance affects biodiversity is important for both fundamental and applied reasons. Here, I investigate how disturbances with different ecological effects change biodiversity metrics. I define three main types of disturbance effects: D disturbance (shifts in mortality rate), B
openaire   +4 more sources

New evidence on the identity of the European Helorus species (Hymenoptera, Proctotrupoidea, Heloridae) [PDF]

open access: yesBiodiversity Data Journal
Species of Helorus Latreille 1802 are rarely collected endoparasitoids of Chrysopidae larvae (Neuroptera). Previous work on the limits between the European species of this species-poor genus, based on morphology only, has left some uncertainties.
Jonathan Vogel   +2 more
doaj   +3 more sources

MODEL OF CLIMATE AND LAND-USE CHANGES IMPACT ON WATER SECURITY IN AMBON CITY, INDONESIA

open access: yesGeoplanning: Journal of Geomatics and Planning, 2017
Ambon City is the center of national activities in Maluku province, established under Presidential Decree 77 issued in 2014 about spatial planning of Maluku Islands. Ambon is a strategic region in terms of development in agriculture and fisheries sectors.
Roland Alexander Barkey   +2 more
doaj   +1 more source

Specialist Birds Replace Generalists in Grassland Remnants as Land Use Change Intensifies

open access: yesFrontiers in Ecology and Evolution, 2021
The ideal free distribution theory predicts that mobile species distribute themselves among habitat patches so as to optimize their fitness. Changes in land use alter the quality of habitat patches and thereby affect the distribution of species ...
Ingmar R. Staude   +8 more
doaj   +1 more source

Repeated subsamples during DNA extraction reveal increased diversity estimates in DNA metabarcoding of Malaise traps

open access: yesEcology and Evolution, 2022
With increased application of DNA metabarcoding in biodiversity assessment, various laboratory protocols have been optimized, and their further evaluation is subject of current research. Homogenization of bulk samples and subsequent DNA extraction from a
Vera M. A. Zizka   +7 more
doaj   +1 more source

Human impacts on the distribution and genetic diversity of Eurasian minnows (Phoxinus: Leuciscidae) in the Rhenish Massif

open access: yesKnowledge and Management of Aquatic Ecosystems
Introductions of non-native species, a key driver of biodiversity loss, may be underestimated due to cryptic species. In the Rhenish Massif (western Germany), anthropogenic introductions of Eurasian minnows (Phoxinus) caused discrepancies in genetic ...
Sternberg Nils   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy