Bieler & Mikkelsen -- Eolis stations supplemental data

American Malacological Bulletin, 2003

John B. Henderson Jr.'s dredging expeditions off the Florida Keys, between 1910 and 1916, resulted in the most important and most extensive collection to date of benthic marine molluscs from the southeastern United States. The annual cruises aboard his private motor yacht Eolis, accompanied by malacologists Paul Bartsch, George Hubbard Clapp, and Charles Torrey Simpson, sampled extensively in various water depths from Miami to the Dry Tortugas, the westernmost extension of the Florida Keys island chain. Henderson deposited tens of thousands of specimen series in the collection of the Smithsonian Institution's National Museum of Natural History (NMNH) that are the basis of numerous malacological studies and were included in systematic papers by Dall, Bartsch, Henderson, Simpson, Perez Farfante, Abbott, Boss, and many others. No cruise descriptions or station lists have been published to date; previous authors relied on unpublished Eolis "station lists" on file in the NMNH Department of Invertebrate Zoology. This paper provides for the first time a review of Henderson's original handwritten ship logs, now maintained in the Smithsonian Institution Archives. Based on these and other available sources, it reconstructs and corrects prior data about the Eolis cruises while providing insight into collecting conditions during the early 20th century. Most notably, it is shown that the Smithsonian Eolis station numbers reflect a sequence of specimen donations and accessions, rather than mirroring the actual cruise events either by sample number or date

Collection Forum, 2012

The rehousing of the vast dry mollusk collection at the Academy of Natural Sciences of Philadelphia is described. Considerations regarding the existing building, the choice and design of new equipment, and the logistics of the project are discussed, together with evidence for its necessity.

American Malacological Bulletin, 2018

In 2017, a minimum of 8.5 million mollusk lots representing some 100 million specimens were held by 86 natural history collections in the U.S. (81) and Canada (5). Of these, 6.2 million lots representing 70 million specimens were cataloged (73%), another 2.3 million lots were considered quality backlog awaiting cataloguing, and 4.5 million lots (53% of the total) had undergone some form of data digitization. About 1.1 million (25%) of the digitized lots have been georeferenced, albeit with different approaches to accuracy and uncertainty. Fewer than 25% of collections, mainly larger ones, claim to be fully Darwin Core compliant. There are 35,000 primary type lots and 66,000 secondary type lots, representing 1.6% of cataloged lots. About 87% of lots are dry and 13% are fl uid preserved, with less than 0.3% frozen. The majority of lots are gastropods (71%) and bivalves (26%). By habitat, 54% of lots are marine, 26% terrestrial, 19% freshwater, and 1% brackish. About 43% of marine and 57% of non-marine holdings are from North America including the Caribbean. Solem (1975), in a previous survey of U.S. and Canadian malacological collections, reported 3.74 million lots of which 775,000 (21%) were uncataloged backlog, and suggested that backlog was growing at a faster rate than specimens were being cataloged. Since then the overall size of mollusk collections has grown by 227% and cataloged lots by 208%, but quality backlog has grown by 300%, confirming Solem’s extrapolation. Solem noted that the eight largest collections held 78% of the lots, but in 2017 the eight largest (now with a slightly different composition) held only 63.5% of the lots, reflecting substantial growth of small and mid-sized collections, and the larger number of institutions that we surveyed. Solem reported a substantial gap between large collections (160,000 lots; AMNH, ANSP, BPBM, DMNH, FMNH, LACM, MCZ, UF, UMMZ, USNM) and mid-sized ones (35,000-75,000 lots; ChM, FWRI, Hefner, HMNS, SDNH, NCSM, SIOBIC, UCM, UWBM, YPM), but seven collections now fall in the range of 76,000 to 160,000 (CM, BMSM, CASIZ, CMNML, INHS, OSUM, and SBMNH), and two have jumped to the large category (UF and DMNH). Often overlooked is Solem’s conclusion that mollusk collections in the United States and Canada are second only to insect collections for number of specimens, which is still true. Because there are far fewer species of mollusks than insects, mollusks have more specimens per species, averaging 1,100 in our survey, almost ten times what Solem reported for insects and approaching what he reported for fish. Bivalvia may have as many as 2,400 specimens/species, which makes them among the best-sampled classes of metazoans. The high number of specimens/species among mollusk and fi sh collection makes them well-suited for environmental studies that track faunal change over time and space.

2016

Muestras de moluscos de importancia comercial se obtuvieron en los arrastres efectuados en tres transectos en la plataforma continental del Sur de Sinaloa, Mexico (Campanas SIPCO), entre 27 y 117 m de profundidad. Las especies mas abundantes fueron Chione kellettii , Solenosteira gatesi y cinco especies de Anadara . El peso fresco por hora de arrastre para estas especies alcanzo 2,4 kg/hora en las estaciones mas someras (27 a 78 m). Especimenes de Anadara y C. kellettii se colectaron tambien en profundidades de hasta 109 y 114 m respectivamente. Se analizo las condiciones ambientales (temperatura, salinidad, oxigeno disuelto y sedimentos) en cada estacion de muestreo, observandose que S. gatesi fue colectada en una gran variedad de sustratos y en condiciones de oxigenacion a veces muy bajas; Chione kellettii fue colectada principalmente en sustrato arcilloso y en condiciones de oxigenacion similares. Se estimo la captura por unidad de area de C. kellettii en 12 kg/ha. Sin embargo, e...

Coral Reefs, 2007

Marine and Fishery Sciences (MAFIS), 2021

Digitally accessible Primary Biodiversity Data (PBD) are currently available through a number of web-based platforms. This information is allowing for a growing number of ecological, biodiversity informatics or conservation projects. Most of this information comes from Natural History Collections (NHC) worldwide. Despite well-known limitations, NHC data are particularly useful as a source of data on invertebrates, which comprise about 99% of animal life. However, a presumably very high amount of PBD is still not digitally accessible. Even the most important scientific collections in developed countries are not fully inventoried or digitally accessible. Furthermore, species determination rates remain alarmingly low for some collections, and most existing determinations probably should be retested. This is particularly true of expensive, difficult-to-obtain deep-sea benthic samples. This paper reviews the database on material collected by the German RV ‘Walther Herwig I and II’ during...

Gulf and Caribbean Research, 2011