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Articles 1 - 30 of 49
Full-Text Articles in Biodiversity
Book Review: Habitantes De La Obscuridad (Fauna Ibero-Balear De Las Cuevas) – Inhabitants Of The Darkness (Ibero-Baleric Fauna Of Caves), Oana Teodora Moldovan
Book Review: Habitantes De La Obscuridad (Fauna Ibero-Balear De Las Cuevas) – Inhabitants Of The Darkness (Ibero-Baleric Fauna Of Caves), Oana Teodora Moldovan
International Journal of Speleology
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Development Of A 16s Reference Library For Edna Metabarcoding The Freshwater Fishes Of Western Ecuador., Hannah M. Willis, Olivia G. Schweikart, Windsor E. Aguirre
Development Of A 16s Reference Library For Edna Metabarcoding The Freshwater Fishes Of Western Ecuador., Hannah M. Willis, Olivia G. Schweikart, Windsor E. Aguirre
DePaul Discoveries
This project examines the use of the 16S locus to amplify neotropical freshwater fishes native to Western Ecuador in a newly created 16S reference library for DNA barcoding and eDNA metabarcoding applications. Among the orders Characiformes, Siluriformes, Cichliformes, Gobiiformes, Cryprinodontiformes, Gymnotiformes, and Perciformes, a compendium of 105 specimens were sequenced, with 43 representing new 16S sequences previously unavailable on Genbank.
A Comparison Of Seasonal Reproductive Pattern In Two Sympatric Darters Of The Simoperca Clade, Etheostoma Duryi And Etheostoma Simoterum, Tiffany Bell, Elizabeth Cantrell, Bruce Stallsmith
A Comparison Of Seasonal Reproductive Pattern In Two Sympatric Darters Of The Simoperca Clade, Etheostoma Duryi And Etheostoma Simoterum, Tiffany Bell, Elizabeth Cantrell, Bruce Stallsmith
Southeastern Fishes Council Proceedings
We present results from an examination of the seasonal reproductive patterns of two closely related sympatric darter species of the Simoperca clade, Etheostoma duryi and Etheostoma simoterum. Most members of the genus Etheostoma exhibit striking sexual dimorphism, making reproductive strategy a logical point of study. Monthly collections of specimens over a one-year period were performed at a single site on the Flint River near Huntsville, Alabama. Standard length and gross somatic mass were measured for all individuals. Sex ratio was examined for possible skew. Measures of reproductive effort were monthly means of gonadosomatic index of both sexes, total oocyte count, …
Worldwide Distribution Of Cave-Dwelling Chelodesmidae (Diplopoda, Polydesmida), Rodrigo Salvador Bouzan, Jackson C. Means, Kaloyan Ivanov, Rodrigo L. Ferreira, Antonio Domingos Brescovit, Luiz Felipe Moretti Iniesta
Worldwide Distribution Of Cave-Dwelling Chelodesmidae (Diplopoda, Polydesmida), Rodrigo Salvador Bouzan, Jackson C. Means, Kaloyan Ivanov, Rodrigo L. Ferreira, Antonio Domingos Brescovit, Luiz Felipe Moretti Iniesta
International Journal of Speleology
Chelodesmidae is one of the most species rich families within the Myriapoda. However, little is known regarding their association with caves. We provide a list of all Chelodesmidae taxa reported from caves, map their worldwide distribution, and discuss the troglomorphic features of the group. A total of 25 species and subspecies from 20 genera and 2 subfamilies have been recorded from 59 caves and cave systems in 11 countries. These numbers represent a surprisingly modest proportion (~3%) of the approximately 800 described species in the family. Records of cave-dwelling chelodesmids appear to be geographically biased with most taxa reported from …
Variation In Coastal Macroinvertebrate Species Diversity On Intertidal Boulders In Trinidad, California., Louis Antonelli, Alexandra Winkler, Theron Taylor, Natalie Greenleaf
Variation In Coastal Macroinvertebrate Species Diversity On Intertidal Boulders In Trinidad, California., Louis Antonelli, Alexandra Winkler, Theron Taylor, Natalie Greenleaf
IdeaFest: Interdisciplinary Journal of Creative Works and Research from Cal Poly Humboldt
Coastal environments of Humboldt County provide an optimal habitat for a diversity of macroinvertebrates. This study’s focus is to determine the differences in diversity of coastal macroinvertebrate (CM) species on intertidal boulders. Eleven CM species were visually counted within a one-square-meter quadrat along two height strata of five intertidal boulders. Based upon the Shannon-Wiener diversity index, diversity was measured between the CM species in the lower region (0-1 meter from base of boulder) and the upper region (1-2 meters from base of boulder). The resulting data showed the lower regions of the boulders had a higher average diversity rating, as …
Evaluation Of Invasive Avifauna Management Strategies In North America, Christopher L. Castillo
Evaluation Of Invasive Avifauna Management Strategies In North America, Christopher L. Castillo
Graduate Review
Human action has long been the cause of species introductions into new ecosystems (Lodge 1993). Now, these non-native species are a major global problem both ecologically and economically (Bled et al. 2011). Invasive species can alter habitats, decrease biodiversity, damage human settlements, and destroy agriculture (Townsend Peterson and Vieglais 2001; Kumschick and Nentwig 2010). The United States has been particularly affected by invasive introductions, a multitude of which have been avian species. Various management techniques have been implemented in order to control problem bird populations, however often times these methods are used with a ‘trial and error’ strategy. This review …
Habitat Of The Long-Tailed Wood-Partridge In Central Mexico, David García-Solózano, Crisma Lopez-Sanchez, Edgardo Lopez-González, Carlos González-Rebeles Islas
Habitat Of The Long-Tailed Wood-Partridge In Central Mexico, David García-Solózano, Crisma Lopez-Sanchez, Edgardo Lopez-González, Carlos González-Rebeles Islas
National Quail Symposium Proceedings
The long-tailed wood-partridge (Dendrortyx macroura; hereafter, wood-partridge) is a forest quail endemic to the temperate forests of the Trans-Mexican Volcanic Belt of central Mexico and is considered threatened according to the Secretariat of the Environment of Mexico. We studied 34 sites within the Natural Resources Protection Area River Basins of the Valle de Bravo, Malacatepec, Tilostoc and Temascaltepec in central Mexico to evaluate wood-partridge habitat during September–December 2019. We evaluated attributes of tree, shrub, and herbaceous vegetation, canopy cover, humidity, slope, and altitude. We also identified vegetation used for nesting, food, and shelter. The scant information published for …
Environmental And Habitat Preferences Of The Algerian Hedgehog Atelerix Algirus(Lereboullet, 1842) In El Kala National Park (North-East Algeria), Sakraoui Rym, Boukheroufa Mehdi, Dadci Walid, Abdallah Khadidjawissal, Senaoui Charafeddine, Sakraoui Feriel, Benyacoub Slim
Environmental And Habitat Preferences Of The Algerian Hedgehog Atelerix Algirus(Lereboullet, 1842) In El Kala National Park (North-East Algeria), Sakraoui Rym, Boukheroufa Mehdi, Dadci Walid, Abdallah Khadidjawissal, Senaoui Charafeddine, Sakraoui Feriel, Benyacoub Slim
Journal of Bioresource Management
We conducted this study to identify the preferred habitat of Atelerix algirus in the National Park of El Kala (PNEK), through the analysis of the catches rates of the species combined to an ethno zoological survey carried out among the residents. The study was conducted between January 2010 and December 2011, in five localities of the Park, different by their useful areas (forests and agricultural land) and their degree of urbanization: Raml Souk, El Aioun, Berrihane, El Kala and Bougous. We also surveyed 57 residents of Berrihane locality. Our results identified the locality of Berrihane as the preferred area of …
Preliminary Survey And Diet Analysis Of Anurans In The Riparian Zone Of Calayagon Watershed, Agusan Del Norte, Philippines, Jenessa Verna B. Salo, Chennie L. Solania
Preliminary Survey And Diet Analysis Of Anurans In The Riparian Zone Of Calayagon Watershed, Agusan Del Norte, Philippines, Jenessa Verna B. Salo, Chennie L. Solania
Journal of Bioresource Management
Watersheds are critical habitats for a diverse array of organisms. Among all the fauna, anurans are excellent biological indicators of environmental health. The community structure is often associated with a relationship between species diversity and diet. An anuran survey was conducted along riparian zones of three selected barangays of Calayagon Watershed (Guinabsan, Rizal, and Malpoc), Philippines. Extensive opportunistic methods for a total of 480 man-hours were spent traversing the area. A total of 195 individuals, consisting of seven species from four families, were recorded. Seventy-two percent of the individual species were regarded as Least concern, and 14 % were Near-threatened. …
Distribution And Breeding Of The Black-Bellied Whistling-Duck (Dendrocygna Autumnalis) In Arkansas, With A Brief Chronology Of Distribution And Breeding In Southeastern United States, C. Renn Tumlison
Journal of the Arkansas Academy of Science
The Black-Bellied Whistling-Duck (Dendrocygna autumnalis) was a rare bird first reported from Arkansas in 1982, when it was seen in Hempstead Co. in southwestern Arkansas. Observations surged in parts of the state about 2005, then again about 2016, and the bird is now fairly common seasonally in many parts of the state. By use of online sources for citizen science, we elucidate the history of occurrence and present analysis of seasonal distribution of this bird in Arkansas. Individuals occur in Arkansas throughout the year, but observations are most common and widely distributed from March-September, after which most individuals …
Artificial Intelligence System For Automatic Imaging, Quantification, And Identification Of Arthropods In Leaf Litter And Pitfall Samples, Pierce Helton, Khoa Luu, Ashley Dowling
Artificial Intelligence System For Automatic Imaging, Quantification, And Identification Of Arthropods In Leaf Litter And Pitfall Samples, Pierce Helton, Khoa Luu, Ashley Dowling
Inquiry: The University of Arkansas Undergraduate Research Journal
It is well known that arthropods are the most diverse and abundant eukaryotic organisms on the planet. Museum and research collections have huge insect accumulations from expeditions conducted over history that contain specimens of both temporal and spatial value, including hundreds of thousands of species. This biodiversity data is inaccessible to the research community, resulting in a vast amount of “dark data”. The primary objective of this study is to develop an artificial intelligence-driven system for specimen identification that greatly minimizes the time and expertise required to identify specimens in atypical environments. Successful development will have profound impacts on both …
Remote Detection Of Disturbance From Motorized Vehicle Use In Appalachian Wetlands, Walter Smith
Remote Detection Of Disturbance From Motorized Vehicle Use In Appalachian Wetlands, Walter Smith
Virginia Journal of Science
Wetland disturbance from motorized vehicle use is a growing concern across the Appalachian coalfields of southwestern Virginia and portions of adjacent states, particularly as both extractive industries and outdoor recreation development expand in regional communities. However, few attempts have been made in this region or elsewhere to adapt approaches that can assist researchers and land managers in remotely identifying and monitoring wetland habitats disturbed by motorized vehicle use. A comparative analysis of wetlands impacted and unimpacted by off-road vehicle activity at a public recreation area in Tazewell County, Virginia was conducted to determine if and how a common, satellite-derived index …
Vertebrate Impact On A Newly Deployed Shoreline Stabilization Project By Wildlife Camera Analysis, Julia Rifenberg, Jason Litwak, Rebecca Fillyaw
Vertebrate Impact On A Newly Deployed Shoreline Stabilization Project By Wildlife Camera Analysis, Julia Rifenberg, Jason Litwak, Rebecca Fillyaw
The Pegasus Review: UCF Undergraduate Research Journal
Living shoreline stabilization is a technique that utilizes plants and other natural elements to protect estuarine coasts. Research has provided minimal information about which vertebrate species utilize living shorelines post-deployment. For this project, ten wildlife cameras were placed along a living shoreline site in Canaveral National Seashore (CANA) to document which vertebrate species utilize the living shoreline and surrounding vegetation. This shoreline was stabilized with red mangroves (Rhizophora mangle) and eastern oyster (Crassostrea virginica) shell bags in June 2019. The cameras, activated by motion sensors, remained at the site for five days a month for seven …
Microhabitat Selection Of A Sicilian Subterranean Woodlouse And Its Implications For Cave Management, Giuseppe Nicolosi, Stefano Mammola, Salvatore Costanzo, Giorgio Sabella, Rosolino Cirrincione, Giovanni Signorello, Marco Isaia
Microhabitat Selection Of A Sicilian Subterranean Woodlouse And Its Implications For Cave Management, Giuseppe Nicolosi, Stefano Mammola, Salvatore Costanzo, Giorgio Sabella, Rosolino Cirrincione, Giovanni Signorello, Marco Isaia
International Journal of Speleology
Human activities in subterranean environments can affect different ecosystem components, including the resident fauna. Subterranean terrestrial invertebrates are particularly sensitive to environmental change, especially microclimatic variations. For instance, microclimate modifications caused by the visitors may directly affect local fauna in caves opened to the public. However, since numerous factors act synergistically in modulating the distribution and abundance of subterranean species, it remains challenging to differentiate the impact of human intervention from that of other factors. Therefore, evidence of the impact of tourism on cave invertebrate fauna remains scarce. Over a year and with approximately two visits a month, we investigated …
Distribution And History Of The Roseate Spoonbill (Platalea Ajaja) In Arkansas, C. Renn Tumlison, Grace Wills, Karen Rowe
Distribution And History Of The Roseate Spoonbill (Platalea Ajaja) In Arkansas, C. Renn Tumlison, Grace Wills, Karen Rowe
Journal of the Arkansas Academy of Science
The Roseatte Spoonbill (Platalea ajaja) is a rare bird in Arkansas and was not reported from the state until 1959, when it was seen in southwestern Arkansas. By use of online sources for citizen science, we elucidate the history of occurrence and present analysis of seasonal distribution of this bird in Arkansas. Individuals arrive in Arkansas as early as April, observations peak in August, and the birds may remain to late October when colder weather promotes southward migration. Most observations are of a few birds, but a maximum of 128 has been counted at one location and time. …
Investigation Of Fluorescence In Selected Mammals Of Arkansas, C. Renn Tumlison, Terry L. Tumlison
Investigation Of Fluorescence In Selected Mammals Of Arkansas, C. Renn Tumlison, Terry L. Tumlison
Journal of the Arkansas Academy of Science
The adaptive value of fluorescence among the vertebrates has been studied most in fishes and birds, and only a few observations have been published regarding fluorescence in the pelage of mammals. Recently, reports of fluorescence in some marsupials, the platypus, and in flying squirrels have become available. We report the occurrence of fluorescent properties in some mammals from Arkansas. Most carnivores, bats, and rodents did not exhibit the property when viewed under UV light. However, opossums, rabbits, a weasel, muskrats, and moles showed substantial UV response, and a few other mammals showed minor fluorescence. Colors fluoresced included pink, green, and …
Diagnosis And Distribution Of Florida Sand Darter, Ammocrypta Bifascia (Teleostei; Percidae), In The Flint River, Georgia, Camm C. Swift, Gregory R. Moyer, Christine E. Fallon, Brett Albanese
Diagnosis And Distribution Of Florida Sand Darter, Ammocrypta Bifascia (Teleostei; Percidae), In The Flint River, Georgia, Camm C. Swift, Gregory R. Moyer, Christine E. Fallon, Brett Albanese
Southeastern Fishes Council Proceedings
Abstract: In 2013, we observed the presence of an undocumented Ammocrypta species in the lower Flint River, Georgia. The occurrence represents the first record of the genus in Georgia. Subsequent surveys at 24 sites, using seining or snorkeling, documented additional specimens from mainstem sites (n = 3) between Albany and Bainbridge and from Ichawaynochaway Creek (n = 5 sites), a large tributary to the Flint River. We used morphological and genetic data to identify specimens to species. Morphological examination included 23 morphometric and 8 meristic characters from fifteen specimens that were compared to specimens from Williams (1975). For genetic analyses, …
Impact Of Anthropic Pressure On The Quality And Diversity Of Groundwater In The Region Of Sighus Oum-El-Bouaghi And El Rahmounia, Algeria., Hadjab Ramzi, Khammar Hichem, Redjaimia Lylia, Merzoug Djemoi, Saheb Menouar
Impact Of Anthropic Pressure On The Quality And Diversity Of Groundwater In The Region Of Sighus Oum-El-Bouaghi And El Rahmounia, Algeria., Hadjab Ramzi, Khammar Hichem, Redjaimia Lylia, Merzoug Djemoi, Saheb Menouar
Journal of Bioresource Management
Groundwater of Oum-El-Bouaghi and its surroundings hosts a variety of microflora and fauna. This study investigated the relationship between the effect of human activity and the biodiversity and distribution of aquatic fauna in two semi-arid regions Sighus region (Oum-El-Bouaghi) and El Rahmouni (Constantine) in north-eastern Algeria. Fourteen wells and six springs were studied in two hydrographic basins, that of Constantine and Seybouse Melegue. Significant differences were revealed between the wells and springs in the two watersheds, making it possible to distinguish four groups of wells and two groups of springs. The overall faunal richness of the stations appeared to be …
The Role Of Microhabitats In Structuring Cave Invertebrate Communities In Guatemala, Gabrielle S.M. Pacheco, Marconi Souza Silva, Enio Cano, Rodrigo L. Ferreira
The Role Of Microhabitats In Structuring Cave Invertebrate Communities In Guatemala, Gabrielle S.M. Pacheco, Marconi Souza Silva, Enio Cano, Rodrigo L. Ferreira
International Journal of Speleology
Several studies have tried to elucidate the main environmental features driving invertebrate community structure in cave environments. They found that many factors influence the community structure, but rarely focused on how substrate types and heterogeneity might shape these communities. Therefore, the objective of this study was to assess which substrate features and whether or not substrate heterogeneity determines the invertebrate community structure (species richness and composition) in a set of limestone caves in Guatemala. We hypothesized that the troglobitic fauna responds differently to habitat structure regarding species richness and composition than non-troglobitic fauna because they are more specialized to live …
Groundwater Quality In Two Semi-Arid Areas Of Algeria: Impact Of Water Pollution On Biodiversity, Redjaimia Lylia, Hadjab Ramzi, Khammar Hichem, Merzoug Djemoi, Saheb Menouar
Groundwater Quality In Two Semi-Arid Areas Of Algeria: Impact Of Water Pollution On Biodiversity, Redjaimia Lylia, Hadjab Ramzi, Khammar Hichem, Merzoug Djemoi, Saheb Menouar
Journal of Bioresource Management
The biodiversity and quality of subterranean waters were comparatively studied in the Tarf plain near Oum-El-Bouaghi and in the Ksar S’bahi in Oum-El-Bouaghi, in North-eastern Algeria. For this purpose, physicochemical and faunistic analyses were carried out on the water of ten stations located in the area of Tarf, and thirteen in the area of S’bahi. In the wells of Tarf, the average stygobiologic diversity was relatively high in the wells located upstream the dumping site from the city where the groundwater presented low contents of nitrates and orthophosphates. In contrast, the wells located in the spreading zone of Tarf wastewaters …
Stone-Stacking As A Looming Threat To Rock-Dwelling Biodiversity, Ricardo Rocha, Paulo A. V. Borges, Pedro Cardoso, Mirza Dikari Kusrini, José Luis Martín-Esquivel, Dília Menezes, Mário Mota-Ferreira, Sara F. Nunes, Inês Órfão, Catarina Serra-Gonçalves, Manuela Sim-Sim, Pedro Sepúlveda, Dinarte Teixeira, Anna Traveset
Stone-Stacking As A Looming Threat To Rock-Dwelling Biodiversity, Ricardo Rocha, Paulo A. V. Borges, Pedro Cardoso, Mirza Dikari Kusrini, José Luis Martín-Esquivel, Dília Menezes, Mário Mota-Ferreira, Sara F. Nunes, Inês Órfão, Catarina Serra-Gonçalves, Manuela Sim-Sim, Pedro Sepúlveda, Dinarte Teixeira, Anna Traveset
Human–Wildlife Interactions
This letter to the editor describes the surge of “photo-friendly” stacks of stones as an emerging tourism-associated threat to rock-dwelling biodiversity.
Vertebrate Natural History Notes From Arkansas, 2020, C. Renn Tumlison, Matt Connior, Blake Sasse, Henry Robison, Stan Trauth, S Higdon, L Baer, Z. Baer, R. Stinson, D. Carson, T. Inebnit, L. Lewis, Roger Perry, Ron Redman
Vertebrate Natural History Notes From Arkansas, 2020, C. Renn Tumlison, Matt Connior, Blake Sasse, Henry Robison, Stan Trauth, S Higdon, L Baer, Z. Baer, R. Stinson, D. Carson, T. Inebnit, L. Lewis, Roger Perry, Ron Redman
Journal of the Arkansas Academy of Science
Smaller details of natural history often go undocumented to science if those details are not parts of larger studies, but small details can provide insights that lead to interesting questions about ecological relationships or environmental change. We have compiled recent important observations of distribution and reproduction of fishes and mammals. Included are new distributional records of mammals, and observations of reproduction in several mammals for which few data exist in Arkansas. A rare record of the Long-tailed weasel, a special of special concern in Arkansas, is documented from Newton Co. We also provide evidence that Seminole bats likely reproduce in …
Distribution And Reproduction By The Purple Gallinule (Porphyrio Martinica) In Arkansas, C. Renn Tumlison, Terry L. Tumlison, Tamzen T. Bryant
Distribution And Reproduction By The Purple Gallinule (Porphyrio Martinica) In Arkansas, C. Renn Tumlison, Terry L. Tumlison, Tamzen T. Bryant
Journal of the Arkansas Academy of Science
The Purple Gallinule (Porphyrio martinica) is a rare bird in Arkansas, and its populations likely have declined due to loss of marshy areas with emergent vegetation. By use of online sources for citizen science combined with a field study, we elucidate the current distribution of this bird in Arkansas, and document characteristics of reproduction and development. Purple Gallinules arrive in Arkansas as early as April and remain to late October. Nesting occurs from early May into July, and nests may represent second broods. Ontogenetic changes in hatchlings are described.
Just Preservation, Trusteeship And Multispecies Justice, Francisco J. Santiago-Ávila, Adrian Treves, William Lynn
Just Preservation, Trusteeship And Multispecies Justice, Francisco J. Santiago-Ávila, Adrian Treves, William Lynn
Animal Sentience
We are grateful to all the commentators who engaged with our target article. Some commentators have offered important insights into our proposed design and methods for legally intervening on behalf of futurity. Others have focused on theoretical considerations central to our proposal for multispecies justice and trusteeship. All have inspired modifications and further elaboration of our initial proposal. In this Response, we engage with the commentaries, integrating their suggestions, striving for convergence and complementarity, but also discussing points of divergence with our proposed framework where necessary. There is substantial overlap in the points of view of the three co-authors, but …
A Tentative List Of The Land Snails Of Georgia, U.S.A., Zachary I. Felix, Michael A. Dubuc, Hassan A. Rana
A Tentative List Of The Land Snails Of Georgia, U.S.A., Zachary I. Felix, Michael A. Dubuc, Hassan A. Rana
Georgia Journal of Science
Because of their high ecological and conservation value, and because we know so little about the group, we compiled a systematic if tentative list of land snails from the state of Georgia. After gleaning a list of species from a monograph on the land snails of eastern United States, written by Leslie Hubricht in 1985, we realized that many species whose ecological requirements are found in Georgia had not been documented there. Therefore, we developed a qualitative model to predict the likelihood that these candidate species occur in Georgia and would eventually be documented. We tested the model with collections …
The Multifaceted Effects Induced By Floods On The Macroinvertebrate Communities Inhabiting A Sinking Cave Stream, Octavian Pacioglu, Nicoleta Ianovici, Mărioara N. Filimon, Adrian Sinitean, Gabriel Iacob, Henrietta Barabas, Alexandru Pahomi, Andrei Acs, Hanelore Muntean, Lucian Pârvulescu
The Multifaceted Effects Induced By Floods On The Macroinvertebrate Communities Inhabiting A Sinking Cave Stream, Octavian Pacioglu, Nicoleta Ianovici, Mărioara N. Filimon, Adrian Sinitean, Gabriel Iacob, Henrietta Barabas, Alexandru Pahomi, Andrei Acs, Hanelore Muntean, Lucian Pârvulescu
International Journal of Speleology
First-order sinking cave streams experience considerable hydrological variability, including spates and periods of base-flow during dry seasons. Early-summer flooding on a first-order stream sinking in Ciur-Ponor Cave (Romania) represented a suitable opportunity to test the response of the macroinvertebrate community and of basal food resources quantity and diversity to such a disturbance event. The invertebrate community and basal resources (i.e., woody debris, leaves, fine particulate organic matter and epilithon) were collected from three sampling sites, before and after the flood. The sampling strategy followed an up-downstream gradient of both species diversity and quantity of allochtonous organic matter decrease as the …
Species-Area Model Predicting Diversity Loss In An Artificially Flooded Cave In Brazil, Rodrigo L. Ferreira, Thais G. Pellegrini
Species-Area Model Predicting Diversity Loss In An Artificially Flooded Cave In Brazil, Rodrigo L. Ferreira, Thais G. Pellegrini
International Journal of Speleology
Subterranean environments are poorly known regarding many ecological aspects, such as community structure and its response to different disturbances. To estimate the effects of ground area lost in a limestone cave community in Southeastern Brazil, the invertebrate fauna was sampled before 76% of the cave floor was submerged by the filling of a hydroeletric power plant reservoir. Then, a 2-year monitoring was conducted. A species-area curve based on empiric data was constructed and the z-value of the species-area equation was calculated, what allowed estimating the expected cave richness after flooding comparing with data obtained during the monitoring. The results support …
Hawk On Wire: Ecopoems By Scott T. Starbuck, Vivian M. Hansen
Hawk On Wire: Ecopoems By Scott T. Starbuck, Vivian M. Hansen
The Goose
Review of Scott T. Starbuck’s Hawk on Wire: Ecopoems
Culture-Based Analysis Of ‘Cave Silver’ Biofilms On Rocks In The Former Homestake Mine In South Dakota, Usa, Amanpreet K. Brar, David Bergmann
Culture-Based Analysis Of ‘Cave Silver’ Biofilms On Rocks In The Former Homestake Mine In South Dakota, Usa, Amanpreet K. Brar, David Bergmann
International Journal of Speleology
Tunnels in a warm, humid area of the 1478 m level of the Sanford Underground Research Facility (SURF), located in a former gold mine in South Dakota, USA, host irregular, thin whitish, iridescent biofilms, which appear superficially similar to ‘cave silver’ biofilms described from limestone and lava tube caves, despite the higher rock temperature (32°C) and differing rock surface (phyllite) present at SURF. In this study, we investigated the diversity of cultivable bacteria constituting the cave silver by using several media: CN agar, CN gellan gum and 0.1X R2A agar. The highest colony count (CFU/g of sample) was observed on …
The Intrinsic Value Of Nature, Joanna E. Lambert
The Intrinsic Value Of Nature, Joanna E. Lambert
Animal Sentience
Treves et al. explain the need to preserve the rights of nonhuman species, human youth, and future generations. Although conservation biology has claimed to have an intrinsic valuation ethic since its inception in the 1980s, many aspects of the field have taken a decidedly anthropocentric and instrumentalist trajectory. This has important consequences for conservation-related policy and practice at all scales: local, regional, and global.