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  • 1
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    A new species of Rubus (Rosaceae) from Arunachal Pradesh, India (2018)
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 63, pp. 26-30
    Details
    Publication Date: 2024-06-28
    Description: A new species, Rubus ramachandrae, from Upper Subansiri district of Arunachal Pradesh, India is described and illustrated. It is closely similar to R. stipulosus and R. fuscifolius but differs by densely bristly or hirsute branches; narrowly ovate or oblong-lanceolate leaves with caudate-acuminate apex and adaxially hirsutulous vesture; abaxially grey tomentose intermixed with hirsutulous hairs; larger size of stipules and bracts with distinct margin and vesture; smaller size of floral structure. The distinct foliar as well as floral morphology of R. ramachandrae differs from all previously described species of Rubus. Differences in key morphological characters of R. ramachandrae, R. stipulosus and R. fuscifolius are also tabulated. In addition, pollen morphology is described based on light (LM) and scanning electron (SEM) microscopy. Based on the presence of straggling shrubby habit, free stipules, simple leaves, reflexed and strong needle shaped prickles, the new taxon is assigned to Rubus subg. Malachobatus. An image of the type specimen; digital images of habit, stipule, inflorescence and flower, a detailed illustration and scanned electron microscope images of pollens are provided.
    Keywords: India ; new taxa ; pollen morphology ; Rosaceae ; Rubus ; subgenus Malachobatus
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 2
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    Five new species of water mite genus Atractides Koch, 1837 from Bhutan with new records (Acari: Hydrachnidia: Hygrobatidae) (2023)
    Les Amis d'Acarologia
    In:  Acarologia vol. 63 no. 1, pp. 148-168
    Details
    Publication Date: 2024-06-28
    Description: Water mites of the genus Atractides Koch, 1837 are among the most frequently found mites in running waters of the Himalayas. In the present study seven species of this genus are identified from material collected in 2021 from Bhutan. Five species new for science are described, i.e., Atractides mangdensis sp. nov., A. conflatus sp. nov., A. bhutanicus sp. nov., A. indentatus sp. nov., and A. himalayicus sp. nov.
    Keywords: Himalayas ; taxonomy ; new species ; running waters
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 3
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    Four new Curcuma species (Zingiberaceae) from Thailand (2021)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 65 no. 3, pp. 244-253
    Details
    Publication Date: 2024-06-28
    Description: Four new Curcuma species (Zingiberaceae) from Thailand are described here. Curcuma fimbriata, C. micrantha and C. spathulata belong to C. subg. Hitcheniopsis, while C. globulifera belongs to the nominal C. subg. Curcuma. Each species is compared to the morphologically closest species and detailed descriptions, colour plates and information on their distribution, ecology, phenology and uses are provided. A preliminary IUCN conservation assessment of each of these species is proposed.
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics ; Curcuma globulifera ; Curcuma fimbriata ; Curcuma micrantha ; Curcuma parviflora ; Curcuma spathulata ; Curcuma subg. Hitcheniopsis
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 4
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    Critical thermal maxima and oxygen uptake in Elysia viridis, a sea slug that steals chloroplasts to photosynthesize (2024)
    In:  Journal of Experimental Biology vol. 227 no. 10
    Details
    Publication Date: 2024-06-28
    Description: Photosynthetic animals produce oxygen, providing an ideal lens for studying how oxygen dynamics influence thermal sensitivity. The algivorous sea slug Elysia viridis can steal and retain chloroplasts from the marine alga Bryopsis sp. for months when starved, but chloroplast retention is mere weeks when they are fed another green alga, Chaetomorpha sp. To examine plasticity in thermal tolerance and changes in net oxygen exchange when fed and starving, slugs fed each alga were acclimated to 17°C (the current maximum temperature to which they are exposed in nature) and 22°C (the increase predicted for 2100) and measured at different points during starvation. We also examined increased illumination to evaluate a potential tradeoff between increased oxygen production but faster chloroplast degradation. Following acclimation, we subjected slugs to acute thermal stress to determine their thermal tolerance. We also measured net oxygen exchange before and after acute thermal stress. Thermal tolerance improved in slugs acclimated to 22°C, indicating they can acclimate to temperatures higher than they naturally experience. All slugs exhibited net oxygen uptake, and rates were highest in recently fed slugs before exposure to acute thermal stress. Oxygen uptake was suppressed following acute thermal stress. Under brighter light, slugs exhibited improved thermal tolerance, possibly because photosynthetic oxygen production alleviated oxygen limitation. Accordingly, this advantage disappeared later in starvation when photosynthesis ceased. Thus, E. viridis can cope with heatwaves by suppressing metabolism and plastically adjusting heat tolerance; however, starvation influences a slug's thermal tolerance and oxygen uptake such that continuous access to algal food for its potential nutritive and oxygenic benefits is critical when facing thermal stress.
    Keywords: CTmax ; Kleptoplasty ; Metabolism ; Sacoglossa ; Starvation
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 5
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    A revision of the Crepidorhopalon whytei complex (Linderniaceae) in eastern Africa (2019)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 64 no. 2, pp. 165-176
    Details
    Publication Date: 2024-06-28
    Description: The Crepidorhopalon whytei (Linderniaceae) species complex is revised using morphological analyses. Based primarily on variations in indumentum, floral morphology, corolla colour and seed morphology, four species are formally recognised within this group in eastern Africa. Crepidorhopalon whytei s.str. is widespread in the highlands of eastern Africa, extending from South Sudan and Ethiopia in the north through to western Tanzania in the south. A new combination in Crepidorhopalon is made for Lindernia flava (= C. flavus), which is confined to the Manica Highlands of the Mozambique-Zimbabwe border. Two new species are described, C. namuliensis which is known only from Mt Namuli in northern Mozambique and C. kwaleensis which is known only from the coastal lowlands of southeast Kenya. A fifth, imperfectly known species is documented from the Nguru Mountains of Tanzania where it is so far known from a single collection. Three names are lectotypified. The habitat requirements and distribution are documented and the extinction risk is assessed for each species. Crepidorhopalon flavus is assessed as globally Vulnerable and C. kwaleensis as globally Endangered, while C. namuliensis and C. whytei are currently considered to be of Least Concern, although the latter is declining markedly in parts of its range. The botanical importance of the key sites for the newly recognised taxa is discussed.
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 6
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    Predicting September Arctic Sea Ice: A Multi-Model Seasonal Skill Comparison (2024)
    American Meteorological Society
    In:  EPIC3Bulletin of the American Meteorological Society, American Meteorological Society, ISSN: 0003-0007
    Details
    Publication Date: 2024-06-28
    Description: 〈jats:title〉Abstract〈/jats:title〉 〈jats:p〉This study quantifies the state-of-the-art in the rapidly growing field of seasonal Arctic sea ice prediction. A novel multi-model dataset of retrospective seasonal predictions of September Arctic sea ice is created and analyzed, consisting of community contributions from 17 statistical models and 17 dynamical models. Prediction skill is compared over the period 2001–2020 for predictions of Pan-Arctic sea ice extent (SIE), regional SIE, and local sea ice concentration (SIC) initialized on June 1, July 1, August 1, and September 1. This diverse set of statistical and dynamical models can individually predict linearly detrended Pan-Arctic SIE anomalies with skill, and a multi-model median prediction has correlation coefficients of 0.79, 0.86, 0.92, and 0.99 at these respective initialization times. Regional SIE predictions have similar skill to Pan-Arctic predictions in the Alaskan and Siberian regions, whereas regional skill is lower in the Canadian, Atlantic, and Central Arctic sectors. The skill of dynamical and statistical models is generally comparable for Pan-Arctic SIE, whereas dynamical models outperform their statistical counterparts for regional and local predictions. The prediction systems are found to provide the most value added relative to basic reference forecasts in the extreme SIE years of 1996, 2007, and 2012. SIE prediction errors do not show clear trends over time, suggesting that there has been minimal change in inherent sea ice predictability over the satellite era. Overall, this study demonstrates that there are bright prospects for skillful operational predictions of September sea ice at least three months in advance.〈/jats:p〉
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 7
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    Quantitative analysis of water quality parameters and their influence on the Pacific white shrimp (Litopenaeus vannamei) culture: A case study of Rancong mariculture area in Lhokseumawe, Aceh, Indonesia. (2024)
    Details
    Publication Date: 2024-06-28
    Description: Water quality is one of several aspects that affect the success of aquaculture business. This study analyzes water quality and assesses its impact on aquaculture enterprises in the Rancong pond region of Lhokseumawe City. The study ran from November to December 2018. The water quality of the Rancong pond was sampled directly and tested in multiple labs. The field survey and purposive sampling strategy separated the research location into four stations with three water sampling points. Temperature, salinity, turbidity, brightness, pH, dissolved oxygen, alkalinity, total organic matter, BOD5, total ammonia nitrogen, nitrite, nitrate, phosphate, lead (Pb), total Vibrio bacteria, total general bacteria, and phytoplankton types and abundance were measured. The suitability of water quality is assessed using descriptive analysis, scoring, and matching. The investigation indicates that the quality and maintenance of the source water are highly suitable (S1). Traditional vannamei shrimp ponds in Rancong, Lhokseumawe City, should be maintained as fisheries cultivation areas.
    Description: Published
    Description: Refereed
    Keywords: Physicochemical water parameter ; Feasibility study ; Aquaculture area ; Prawn ; ASFA_2015::M::Mariculture ; ASFA_2015::W::Water quality ; ASFA_2015::S::Shrimp culture
    Repository Name: AquaDocs
    Type: Journal Contribution
    Format: 1103
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  • 8
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    Growth and survival of milkfish (Chanos chanos), tiger prawns (Panaeus monodon), and oysters (Crassostrea sp.) in integrated multi-trophic aquaculture (IMTA) system with varying stocking densities. (2024)
    Details
    Publication Date: 2024-06-28
    Description: Integrated Multitrophic Aquaculture System (IMTA) is a sustainable approach to aquaculture, utilizing ecosystem dynamics by integrating various species. This study examined the growth and survival of milkfish (Chanos chanos), tiger shrimp (Penaeus monodon), and oysters (Crassostrea spp.) in IMTA systems with different stocking densities. A 30-day experiment using a nonfactorial-completely randomized design with four treatments and three replications was conducted. The results showed that the implementation of IMTA had no significant impact on the survival rate of milkfish, tiger prawns or oysters in all treatments. However, important variations in growth parameters were observed. Milkfish and tiger prawns showed the highest weight and length gain in treatment B, followed by treatments A, C, and D. Similarly, oysters showed optimal growth in treatment B, followed by A, C, and D, based on weight gain, length, width, and shell thickness. Throughout the study, the physicochemical parameters of the water remained within acceptable ranges, thus supporting ideal growth conditions for the cultured species. These findings underscore the potential of IMTA to increase aquaculture productivity while upholding the principles of environmental sustainability. By optimizing stocking density and encouraging species diversity, IMTA presents a promising avenue for advancing integrated aquaculture practices, in line with the FAO's blue economy concept and ecosystem approach to aquaculture. Future research should concentrate on refining the IMTA system and evaluating its long-term ecological and economic consequences.
    Description: Published
    Description: Refereed
    Keywords: Mariculture ; Sustainability ; Stocking density ; Multitrophic biota ; Fish pond ; ASFA_2015::M::Mariculture ; ASFA_2015::M::Milkfish culture ; ASFA_2015::S::Shrimp culture ; ASFA_2015::O::Oyster culture ; ASFA_2015::I::Integrated agriculture ; ASFA_2015::A::Aquaculture systems ; ASFA_2015::S::Stocking density
    Repository Name: AquaDocs
    Type: Journal Contribution
    Format: 1105
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  • 9
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    Bioecological characteristics of mangrove snail in Langsa mangrove forest, Aceh, Indonesia: Diversity and community structure. (2024)
    Details
    Publication Date: 2024-06-28
    Description: The most crucial aspect of managing an ecosystem or habitat is knowledge about accompanying biota, such as snails. The research on mangrove snails in the KPH Region III Aceh City of Langsa area was conducted in November 2021 with the goal of evaluating species diversity, density, ecological index, distribution, and their link to surrounding environmental conditions. Snail data was obtained via quadrat transects, with observation stations established using purposive sampling.The snail diversity was found to be five species from four families, with the highest density found in N. planospira (03.13 ind/m2). The diversity index was low (H' ≤ 2.0), dominance was moderate (0.5 〈 C ≤ 0.75), and uniformity tended to be balanced (0.5 〈 E ≤ 0.75). The distribution pattern is clustered (Iδ〉 1), with C. cingulata being abundant (83.33%), and C. capucinus being frequently found (50.00%), N. planospiraonly found occasionally (36.11%), and L. scabra and T. telescopium are relatively uncommon (11.11% and 0.56%, respectively), with a link to environmental variables indicating that T. telescopium prefers fine mud substrates. Meanwhile, C. cingulata, C. capucinus, L. scabra, and N. planospiralive in habitats with fine mud substrates that are more solid than T. telescopium’s habitats.
    Description: Published
    Description: Refereed
    Keywords: Mangrove, gastropod, diversity, density, ecological index, distribution, forest management unit ; ASFA_2015::E::Ecological distribution ; ASFA_2015::M::Mangroves ; ASFA_2015::B::Brackishwater molluscs ; ASFA_2015::B::Brackishwater ecology ; ASFA_2015::S::Species diversity ; ASFA_2015::D::Diversity index
    Repository Name: AquaDocs
    Type: Journal Contribution
    Format: 1104
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  • 10
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    Claves ilustradas para la clasificación de los cangrejos marinos y estuarinos (Malacostraca: Brachyura) de Cuba IV. (2024)
    Details
    Publication Date: 2024-06-28
    Description: Se presenta la cuarta parte de las claves ilustradas para la clasificación de los cangrejos bra- quiuros (Crustacea, Brachyura) de Cuba. Se incluyen las claves y figuras originales de las especies pertenecientes a la Section Eubrachyura, Subsection Heterosomata (final) para la clasificación de las familias Domeciidae (un género y una especie); Panopeidae (10 géneros y 18 especies); Linnaeoxanthidae (un género y una especie); Pseudorhombilidae (11 géne- ros y 16 especies) y Xanthidae (17 géneros y 19 especies), citadas para Cuba.
    Description: The fourth part of the illustrated keys for the classification of the brachyuran crabs (Crus- tacea, Brachyura) of Cuba is presented. The keys and original figures of the species belon- ging to the Section Eubrachyura, Subsection Heterosomata (final) for the classification of the families Domeciidae (1genus and 1 species); Panopeidae (10 genera and 18 species); Linnaeoxanthidae (un género y una especie); Pseudorhombilidae (11 genera and 16 spe- cies) and Xanthidae (17 genera and 19 species) cited for Cuba, are included.
    Description: Published
    Description: Refereed
    Keywords: Claves dicotómicas ilustradas ; Cangrejos braquiuros de Cuba ; Illustrated dichotomous keys ; Brachyuran crabs ; Cuba
    Repository Name: AquaDocs
    Type: Journal Contribution
    Format: 101-114 pp.
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