Results 61 to 70 of about 466,897 (206)

Origin and Dispersal History of Two Colonial Ascidian Clades in the Botryllus schlosseri Species Complex. [PDF]

open access: yesPLoS ONE, 2017
Human-induced global warming and species introductions are rapidly altering the composition and functioning of Earth's marine ecosystems. Ascidians (Phylum Chordata, Subphylum Tunicata, Class Ascidiacea) are likely to play an increasingly greater role in
Marie L Nydam   +2 more
doaj   +1 more source

Community assembly in subtidal epifaunal communities in the Gulf of Maine: A phylogenetic and functional trait approach

open access: yesEcosphere, Volume 17, Issue 9, September 2026.
Abstract How organisms assemble to form a community is a central question in ecology, with commonly inferred mechanisms including environmental filtering, competitive exclusion, and random processes. In community phylogenetics, phylogenetic clustering is often interpreted as evidence of environmental filtering, where closely related species with ...
Martine Wagstaff
wiley   +1 more source

Colonial Ascidian Dispersal: What are the effects of adult population density and isolation on recruitment? [PDF]

open access: yes, 2007
29 pagesInvasive species are thought to be one of the largest ecological threats to healthy ecosystems today. This paper is an attempt to show how anthropogenic transport of species with short dispersal distances is the most important factor in their ...
Braudrick, Nate
core   +1 more source

From environmental heterogeneity to stability: Beta‐diversity stabilizes biomass across space

open access: yesEcology, Volume 107, Issue 9, September 2026.
Abstract Understanding how biodiversity influences ecosystem stability across heterogeneous landscapes is a central challenge in ecology. The spatial insurance hypothesis proposes that turnover in species composition stabilizes ecosystem processes in heterogeneous environments if species dominate in the habitats to which they are best adapted.
Benedikt Brunner   +7 more
wiley   +1 more source

Comparative phylogeography of two colonial ascidians reveals contrasting invasion histories in North America

open access: yes, 2010
Surveys of genetic structure of introduced populations of nonindigenous species may reveal the source(s) of introduction, the number of introduction events, and total inoculum size.
Thomas W. Therriault   +9 more
core   +1 more source

Genetic and cytological aspects of histocompatibility in ascidians [PDF]

open access: yes, 1992
The three types of intraspecific histocompatibility in ascidians fusibility, allograft rejection or retention, and cell contact reaction with mutual lysis - are reviewed and compared under both genetic and histological profiles.
SABBADIN A   +2 more
core   +1 more source

Ocean sediments and shifting baselines—A call to revise European habitat classifications

open access: yesJournal of Applied Ecology, Volume 63, Issue 9, September 2026.
Shifting baselines affect the appropriateness of existing habitat classification frameworks, potentially reducing MPA integrity and efficacy. To enable representative mapping, accurate sensitivity assessments and appropriate management of marine habitats, EUNIS classifications require more flexibility.
Rebecca S. Turley   +7 more
wiley   +1 more source

Natural variation of model mutant phenotypes in Ciona intestinalis [PDF]

open access: yes, 2008
The study of ascidians (Chordata, Tunicata) has made a considerable contribution to our understanding of the origin and evolution of basal chordates. To provide further information to support forward genetics in Ciona intestinalis, we used a combination ...
Annamaria Locascio   +68 more
core   +2 more sources

Introduced and native Phlebobranch and Stolidobranch solitary ascidians (Tunicata: Ascidiacea) around Salvador, Bahia, Brazil

open access: yesZoologia (Curitiba), 2012
The Port of Salvador (12°58'S, 38°30'W) receives cargo ships from different regions such as southeast Asia, North Atlantic, Mediterranean, Africa, North and South America.
Rosana M. Rocha   +3 more
doaj   +1 more source

Phylogenomics and systematics of botryllid ascidians, and implications for the evolution of allorecognition

open access: yesFrontiers in Ecology and Evolution, 2023
Allorecognition, the ability of an organism to distinguish kin from non-kin, or self from non-self, has been studied extensively in a group of invertebrate chordates, the colonial ascidians called botryllids (Subphylum Tunicata, Class Ascidiacea, Family ...
Marie L. Nydam   +9 more
doaj   +1 more source

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