Molluscs

Prié, Vincent

doi:10.1016/b978-0-12-814124-3.00087-x

Cited by 7 publications

(8 citation statements)

References 3 publications

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“…Most global stygosnail diversity is within Hydrobiidae (Prié, 2019), yet no stygosnails in North America belong to this family (Johnson et al., 2013; Wilke et al., 2013). The family Cochliopidae contains the most stygosnail diversity in North America; species occur in the Appalachians, Edwards Aquifer, and Ozarks karst regions in the United States (Gladstone et al., 2019; Hershler & Holsinger, 1990) and the Cuatro Ciénegas‐Río Sabinas System, Río Verde Basin, and Yucatán Platform in Mexico (Figure 3) (Czaja et al., 2020; Grego et al., 2019; Hershler, 1985).…”

Section: Biodiversity Distributional Patterns and Ecologymentioning

confidence: 99%

“…The stygosnail fauna is represented by 39 described species across 20 genera and five families distributed among karst systems in the United States and Mexico. They exhibit considerable variation in morphology (Figure 1) and habitat association (Figure 2) (Hershler & Holsinger, 1990; Prié, 2019). Stygosnails typically exhibit highly restricted distributions; 12 species are single‐site endemics (Table 1).…”

Section: Introductionmentioning

confidence: 99%

“…Often referred to as cavesnails, we use the term stygosnails to better reflect the diversity of groundwater habitats they occupy and to distinguish between stygophilic snails that opportunistically inhabit both surface and subterranean waters. Most stygosnails are no larger than 1–2 mm (Figure 1) and are often characterized by near to complete eye reduction and body depigmentation (Hershler & Holsinger, 1990; Prié, 2019). Recent studies in Mexico and the United States have highlighted various aspects of stygosnail biology, and seven new species have been described in the last 2 years (Alvear, Diaz, Gibson, Jones, et al., 2020; Czaja, Cardoza‐Martínez, et al., 2019; Czaja, Covich, et al., 2019; Gladstone et al., 2019; Grego et al., 2019), indicating an increasing interest in this neglected group.…”

Section: Introductionmentioning

confidence: 99%

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Subterranean freshwater gastropod biodiversity and conservation in the United States and Mexico

Gladstone

Niemiller

Hutchins

et al. 2021

Conservation Biology

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Many taxonomic groups successfully exploit groundwater environments and have adapted to a subterranean (stygobiotic) existence. Among these groups are freshwater gastropods (stygosnails), which represent a widespread and taxonomically diverse component of groundwater ecosystems in North America. However, owing to sampling difficulty and lack of targeted study, stygosnails remain among the most understudied of all subterranean groups. We conducted a literature review to assess the biodiversity and geographic associations of stygosnails, along with the threats, management activities, and policy considerations related to the groundwater systems they inhabit. We identified 39 stygosnail species known to occur in a range of groundwater habitats from karst regions in the United States and Mexico. Most stygosnails exhibit extreme narrow-range endemism, resulting in a high risk of extinction from a single catastrophic event. We found that anthropogenically driven changes to surface environments have led to changes in local hydrology and degradation of groundwater systems inhabited by stygosnails such as increased sedimentation, introduction of invasive species, groundwater extraction, or physical collapse of water-bearing passages. Consequently, 32 of the 39 described stygosnail species in the United States and Mexico have been assessed as imperiled under NatureServe criteria, and 10 species have been assessed as threatened under International Union for Conservation of Nature criteria. Compared with surface species of freshwater snails, stygosnail conservation is uniquely hindered by difficulties associated with accessing subterranean habitats for monitoring and management. Furthermore, only three species were found to have federal protection in either the United States or Mexico, and current laws regulating wildlife and water pollution at the state and federal level may be inadequate for protecting stygosnail habitats. As groundwater systems continue to be manipulated and relied on by humans, groundwater-restricted fauna such as stygosnails should be studied so unique biodiversity can be protected.

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Section: Biodiversity Distributional Patterns and Ecologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Subterranean freshwater gastropod biodiversity and conservation in the United States and Mexico

Gladstone

Niemiller

Hutchins

et al. 2021

Conservation Biology

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“…Gastropods (snails and slugs) are the second-most species-rich group of animals in the world (Prié, 2019). They are ubiquitous heterotrophs (decomposers) and provide essential ecosystem functions associated with energy flow and nutrient cycling (Mason, 1970;Prather et al, 2013).…”

Section: Ecological Characteristicsmentioning

confidence: 99%

Non-Separable Spatio-temporal Models via Transformed Gaussian Markov Random Fields

Azevedo,

Prates,

Willig

2020

Preprint

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Models that capture the spatial and temporal dynamics are applicable in many science fields. Nonseparable spatio-temporal models were introduced in the literature to capture these features. However, these models are generally complicated in construction and interpretation. We introduce a class of non-separable Transformed Gaussian Markov Random Fields (TGMRF) in which the dependence structure is flexible and facilitates simple interpretations concerning spatial, temporal and spatio-temporal parameters. Moreover, TGMRF models have the advantage of allowing specialists to define any desired marginal distribution in model construction without suffering from spatiotemporal confounding. Consequently, the use of spatio-temporal models under the TGMRF framework leads to a new class of general models, such as spatio-temporal Gamma random fields, that can be directly used to model Poisson intensity for space-time data. The proposed model was applied to identify important environmental characteristics that affect variation in the abundance of Nenia tridens, a dominant species of snail in a well-studied tropical ecosystem, and to characterize its spatial and temporal trends, which are particularly critical during the Anthropocene, an epoch of time characterized by human-induced environmental change associated with climate and land use.

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“…The group is cosmopolitan and occurs in temporary and permanent aquatic environments. Along with Dreissenidae, Sphaeriidae is the only family of bivalves inhabiting subterranean habitats (Culver 2012;Prié 2019). Their occurrence in caves has been reported by a number -albeit few-of authors from different localities (e.g.…”

Section: Introductionmentioning

confidence: 99%

First record of Pisidium subtruncatum Malm, 1855 (Bivalvia, Sphaeriidae) in an African cave

Rassam¹,

Moutaouakil²,

Benaissa³

et al. 2020

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Studies on the bivalve family Sphaeriidae in North Africa are very limited at the surface water level, but even more for caves. During an expedition in 2019 to the Ait M’hamed cave (Oum Er Rabia Basin), six specimens of the genus Pisidium were collected. Morphometric and genetic analyses showed that these individuals belong to the species Pisidium subtruncatum Malm, 1855. This work is the first step towards future exploration of cave Sphaeriidae in North Africa.

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Molluscs

Cited by 7 publications

References 3 publications

Subterranean freshwater gastropod biodiversity and conservation in the United States and Mexico

Subterranean freshwater gastropod biodiversity and conservation in the United States and Mexico

Non-Separable Spatio-temporal Models via Transformed Gaussian Markov Random Fields

First record of Pisidium subtruncatum Malm, 1855 (Bivalvia, Sphaeriidae) in an African cave

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