An experimental test of dispersal limitation of species diversity in eelgrass meadows DOI Creative Commons

Coreen Forbes,

Margot Hessing‐Lewis,

Mary I. O’Connor

и другие.

Research Square (Research Square), Год журнала: 2024, Номер unknown

Опубликована: Июль 24, 2024

Abstract Biogenic habitats, including eelgrass, support productive and diverse species assemblages in spatially heterogeneous seascapes. Eelgrass-associated faunal diversity depends not only on conditions within each eelgrass meadow but also their probability of dispersing among meadows a seascape which are separated by soft sediments, kelp or rocky habitats. Experiments required to establish dispersal limitation communities. Here, we experimentally tested the hypothesis that edge effects influence local meadows. We manipulated habitat spacing exposure standardized substrate quantified invertebrate colonization. predicted richness would decline with increasing distance from mobility traits covary species’ responses distance. edges harbor communities distinct interior these differences trophic traits. found decreased this pattern was explained reduced abundance filtering based traits, consistent diversity. Edges did affect total community abundance, trait varied meadow-position average body size, larger interior. These results suggest even short-distance can structure similar richness, profiles will colonize all available absence barriers.

Язык: Английский

Revealing genetic patterns across ecoregions in the northeastern Pacific of California and Baja California DOI

Mariana Ronalda Ferrera‐Rodríguez,

Luis Malpica‐Cruz, Adrián Munguía‐Vega

и другие.

Journal of Biogeography, Год журнала: 2024, Номер 51(11), С. 2298 - 2311

Опубликована: Авг. 19, 2024

Abstract Aim We reconstructed the genetic patterns and identified main breaks of several taxa across California Baja coast. Additionally, we evaluated contribution different variables to level structure. Location Taxon Fish, invertebrates, algae, seagrass mammals. Methods generated a map reconstruct using information (Fst index phylogenetic clades distribution) from literature review population genetics publications 2000 2023. For analysis connectivity drivers, explored effect representing life history traits, reproductive strategies biogeographic five working hypotheses which were with generalized linear models (GLMs). Results 42 63 species our study area. The largest number occurs 27° N 29° 31° 35° N. This range includes transition zones between ecoregions such as Punta Eugenia, California, Mexico Point Conception, USA. also Ensenada, region barrier gene flow. From transboundary perspective, found 40 including 14 commercial or recreational species. none had clear on differentiation assessed in region. Main Conclusion Genetic among do not distribute randomly latitudinal coastal area, rather they are mainly located marine ecoregions. challenge identify specific that explain general highlights complexity drives processes

Язык: Английский

Процитировано

1
Does rafting promote contemporary gene flow? Global and regional patterns of population genetic diversity and structure on the false limpet Siphonaria lateralis in the Southern Ocean DOI Creative Commons

Constanza Millán-Medina,

Marcelo Lizama, Thomas Saucède

и другие.

Frontiers in Ecology and Evolution, Год журнала: 2024, Номер 12

Опубликована: Сен. 9, 2024

Rafting has been proposed as an effective mechanism for species without free-living pelagic larvae to achieve long-distance dispersal, theoretically preventing population differentiation over wide distributional ranges. Moreover, rafting advocated a main dispersal marine invertebrates with sub-Antarctic distributions, because of abundant buoyant kelps, driven by the Antarctic Circumpolar Current. Nonetheless, little attention given role establish regular gene flow across sub-Antarctic, and geographic temporal scales at which it occurs. Aiming unravel these major questions about extent genetic connectivity Southern Ocean (SO), we studied pulmonate limpet Siphonaria lateralis , benthic encapsulated larvae, found on rocky intertidal islands southern South America. Since S. is closely associated D. antarctica plausible, revealed absence phylogeographic structure sub-Antarctic. We sampled 116 individuals from eight localities SO, used 5,515 SNPs obtained through Genotyping-by-Sequencing, determine contemporary diversity, structure, two spatial scales; global, regional, within Kerguelen. Results identified substantial differentiating Patagonia, Falklands/Malvinas Islands, Georgia Kerguelen archipelago, low levels flow. The most notable was between Patagonia/Falklands Georgia/Kerguelen. Structure also significant Patagonia Falkland/Malvinas Islands. Conversely, exhibited closer affinity, indications recent but limited historical estimates four populations were low. At regional scale, noteworthy persisted, insufficient prevent Consequently, rafting’s potential may be overestimated promoting events sporadic, irregular, unpredictable lacking larval stage, since don’t seem facilitate high both scales. Accordingly, other oceanographic factors or processes hinder establishment macroalgae, consequence, in

Язык: Английский

Процитировано

1
Contrasting Patterns of Population Genomic Structure Between Broadcast‐Spawning and Brooding Corals in Southeast Asia DOI Creative Commons
Lutfi Afiq‐Rosli, Benjamin J. Wainwright, Jen Nie Lee

и другие.

Diversity and Distributions, Год журнала: 2024, Номер 30(12)

Опубликована: Ноя. 4, 2024

ABSTRACT Aim As climate change increasingly threatens the world's coral reefs, enhancing their resilience by improving population connectivity for key reef species is crucial ensuring persistence. Here, we evaluate genomic structure of two common species, Pocillopora acuta and Porites sp., chosen due to divergent life histories. Thousands single‐nucleotide polymorphisms (SNPs) were sequenced analysed infer regional patterns in Southeast Asia, a region that harbours tremendous diversity marine life. Location Coasts Malay Peninsula northern Borneo, covering ~1 million km 2 . Method NextRAD genotyping‐by‐sequencing 185 sp. 221 colonies. Libraries prepared on Illumina NovaSeq 6000. Genotyping involved initial quality controls, allele frequency filtering checks contamination. Genetic was assessed with Bayesian clustering, relationships between genetic variation environmental factors studied through redundancy analysis. Contemporary gene flow estimated using BayesAss. Results We observed panmixia among broadcasting populations, while brooding , acts strong barrier dispersal Malacca Strait southern South China Sea. Moreover, its seems follow current ecoregion delineation. By analysing contemporary migrant movement, can prioritise localities conservation. In particular, at Andaman Coral Coast are contemporarily isolated from other localities, Tioman identified as major larval source both species. Main Conclusion Our analyses highlight contrasting differentiation be explained disparity reproductive strategies. These findings important biodiversity managers Asia; incorporation considerations into conservation planning help safeguard ecosystem

Язык: Английский

Процитировано

1
An Experimental Test of Dispersal Limitation of Species Diversity in Eelgrass Meadows DOI

Coreen Forbes,

Margot Hessing‐Lewis,

Mary I. O’Connor

и другие.

Estuaries and Coasts, Год журнала: 2024, Номер 48(2)

Опубликована: Дек. 13, 2024

Язык: Английский

Процитировано

1
An experimental test of dispersal limitation of species diversity in eelgrass meadows DOI Creative Commons

Coreen Forbes,

Margot Hessing‐Lewis,

Mary I. O’Connor

и другие.

Research Square (Research Square), Год журнала: 2024, Номер unknown

Опубликована: Июль 24, 2024

Abstract Biogenic habitats, including eelgrass, support productive and diverse species assemblages in spatially heterogeneous seascapes. Eelgrass-associated faunal diversity depends not only on conditions within each eelgrass meadow but also their probability of dispersing among meadows a seascape which are separated by soft sediments, kelp or rocky habitats. Experiments required to establish dispersal limitation communities. Here, we experimentally tested the hypothesis that edge effects influence local meadows. We manipulated habitat spacing exposure standardized substrate quantified invertebrate colonization. predicted richness would decline with increasing distance from mobility traits covary species’ responses distance. edges harbor communities distinct interior these differences trophic traits. found decreased this pattern was explained reduced abundance filtering based traits, consistent diversity. Edges did affect total community abundance, trait varied meadow-position average body size, larger interior. These results suggest even short-distance can structure similar richness, profiles will colonize all available absence barriers.

Язык: Английский

Процитировано

0