Data From: Population-specific responses in eastern oysters exposed to low salinity in the northern Gulf of MexicoKyle Sirovy, Sandra Casas, Jerome La Peyre & Morgan Kelly
Eastern oysters, Crassostrea virginica, are facing rapid environmental changes in the northern Gulf of Mexico and can respond to these changes via plasticity or evolution. Plastic responses can immediately buffer against environmental changes, although this buffering may impact the organism’s ability to evolve in subsequent generations. While plasticity and evolution are not mutually exclusive, the relative contribution and interaction between them remain unclear. In this study, we investigate the roles of plastic and evolved responses...
We imaged the lungs of five Cuvier's dwarf caiman (Paleosuchus palpebrosus) via computed tomography (CT) and micro-computed tomography (μCT) and compared these data to the lungs of the American alligator (Alligator mississippiensis). These data demonstrate anatomical commonalities between the lungs of P. palpebrosus and A. mississippiensis, and a few notable differences. The structural similarities are (a) a proximally narrow, distally widened, hook-shaped primary bronchus; (b) a cervical ventral bronchus that branches of the primary bronchus...
Data for Interindividual variation in maximum aerobic metabolism varies with gill morphology and myocardial bioenergetics in Gulf killifishBernard Rees, Jessica Reemeyer & Brian Irving
This study asked whether interindividual variation in maximum and standard aerobic metabolic rates of the Gulf killifish, Fundulus grandis, correlate with gill morphology and cardiac mitochondrial bioenergetics, traits reflecting critical steps in the O2 transport cascade from the environment to the tissues. Maximum metabolic rate (MMR) was positively related to body mass, total gill filament length, and myocardial oxygen consumption during maximum oxidative phosphorylation (multiple R2 = 0.836). Standard metabolic rate (SMR) was positively related...
Although recent molecular phylogenetic analyses of Lepidothrix manakins (family Pipridae) have helped clarify their evolutionary relationships, the placement of several lineages remains in question because of low or conflicting branch support. In particular, the relationship of L. coronata to other members of the genus and relationships within the L. nattereri+L. vilasboasi+L. iris clade have been difficult to resolve. We used RADcap to collect restriction site-associated DNA sequence data and estimate the first subspecies-level phylogeny of...
Species are the fundamental units of life and their recognition is essential for science and society. DNA barcoding, the use of a single and often mitochondrial gene, has been increasingly employed as a universal approach for the identification of animal species. However, this approach faces several challenges. Here, we demonstrate with empiricalgenomic data from nine metazoan animal lineages including arthropods and 28 vertebrates that multiple nuclear-encoded markers, so called universal single-copy orthologs (USCOs) performs much...
We investigated how physical and chemical factors affect Chlorophyll a concentrations in the Mississippi River, the largest river in North America, by sampling 878 times from February 1997 to December 2018 near its terminus at Baton Rouge, Louisiana. Measured values included temperature, light (secchi disk), suspended sediments, and nutrients (nitrate+nitrite, phosphate, TP, TN, ammonium, silicate) that may affect phytoplankton communities. The data are available for unrestricted use.
Data from: Range-wide population genetic analysis of Seaside Sparrows (Ammospiza maritima) supports at least five distinct population segments that do not align with current subspecies descriptionsAmie Settlecowski, Kathryn Davis, Mackenzie Roeder, Carolyn Enloe, Thomas Virzi, Margaret Hunter, Stefan Woltmann & Sabrina Taylor
As an obligate salt marsh species, Seaside Sparrows (Ammospiza maritima) are vulnerable to numerous threats including climate change, coastal erosion, sea level rise, and both natural and anthropogenic disasters. Of the nine recognized subspecies, two are extinct and one is endangered. Previous genetic analyses of mitochondrial DNA (mtDNA) and microsatellite loci showed that current taxonomy does not accurately reflect underlying genetic diversity, with possible consequences for the distribution of conservation resources. To further inform Seaside...
A new phylogeny of Rumex (Polygonaceae) adds evolutionary context to the diversity of reproductive systems present in the genusKirstie Grant, Daniel Koenemann, Janet Mansaray, Aisha Ahmed, Hamid Khamar, Jalal El Oualidi & Janelle Burke
Rumex is a unique member of the Polygonaceae family of plants. A source of intrigue for Rumex lies in the diversity of the reproductive systems associated with this genus. Four previously circumscribed subgenera and some two-hundred species comprise the collective Rumex genus. These species exhibit monoecious, dioecious, synoecious (hermaphroditic), and polygamous reproductive systems. Moreover, some of the dioecious species contain heteromorphic sex chromosomes, a phenomenon that is very rare in angiosperms. Apart from these confirmed...
Climate trends and behavior of a model Amazonian terrestrial insectivore, Black-faced Antthrush, indicate adjustment to hot and dry conditionsVitek Jirinec, Elisa Elizondo, Patricia Rodrigues & Philip Stouffer
Rainforest loss threatens terrestrial insectivorous birds throughout the world’s tropics. Recent evidence suggests these birds are declining in undisturbed Amazonian rainforest, possibly due to climate change. Here, we first asked whether Amazonian terrestrial insectivorous birds were exposed to increasingly extreme ambient conditions using 38 years of climate data. We found long-term trends in temperature and precipitation at our study site, especially in the dry season, which was ~1.3 °C hotter and 21% drier in 2019...
Community interaction webs describe both direct and indirect interactions among species. Changes in direct interactions often become noticeable soon after a perturbation, but time lags in responses of many species may delay the appearance of indirect effects and lead to temporal and/or spatial variation in interaction webs. Accurately identifying these shifts in the field requires time-specific, spatially-differentiated interaction webs. We explore how variation in browsing affects interaction webs in a long-unburned chaparral shrubland near the...
A deglacial hazard cascade exemplified by the landslide, tsunami and outburst flood at Elliot Creek, Southern Coast Mountains, British Columbia, CanadaMarten Geertsema, Brian Menounos, Gemma Bullard, Jonathan Carrivick, John Clague, Chunli Dai, Davide Donati, Goran Ekstrom, Jennifer Jackson, Patrick Lynett, Manuele Pichierri, Andy Pon, Dan Shugar, Doug Stead, Justin Del Bel Belluz, Pierre Friele, Ian Giesbrecht, Derek Heathfield, Tom Millard, Sasha Nasonova, Andrew Schaeffer, Brent Ward, Darren Blaney, Erik Blaney, Camille Brillon … & Meghan Sharp
We describe and model the evolution of a recent landslide and outburst flood in the southern Coast Mountains, British Columbia, Canada. About 18 Mm3 of rock descended 1000 m from a steep valley wall and traveled across the toe of a glacier before entering a 0.6 km2 glacier lake and producing a >100-m high wave. Water overtopped the lake outlet and scoured a 10-km long channel before depositing debris on a 2 km2 fan below...
Natural history and community science records confirm rapid geographic shifts in the distribution of Bachman’s Sparrow (Peucaea aestivalis) since 1850Amie Settlecowski, Kathryn Davis, James Cox, Stefan Woltmann & Sabrina Taylor
North American grassland birds colonized emerging habitat created by expanding agriculture in a pattern of eastward expansions from the mid-1800s to mid-1900s. These birds have been declining, since at least the mid1900s, largely as result of anthropogenic landscape change. Only one bird that now breeds predominantly in southeastern pine savannas is thought to have experienced a concurrent range expansion into this region: Peucaea aestivalis (Bachman’s Sparrow). However, our understanding of the P. aestivalis expansion, and...
Louisiana State University12
Austin Peay State University2
Florida Agricultural and Mechanical University1
Zoological Research Museum Alexander Koenig1
3v Geomatics (Canada)1
Technische Universität Braunschweig1
University of Bologna1
Government of British Columbia1
BGC Engineering (Canada)1