scholarly journals Sunfish’s (Mola spp.) Habitat Characteristics on their Appearance at Dive Tourism Depths in Nusa Penida Waters, Bali

2021 ◽  
Vol 21 (1) ◽  
pp. 149
Author(s):  
Dewi SLKT ◽  
Mohammad Mukhlis Kamal ◽  
T Tarsidin ◽  
G Yulianto
Keyword(s):  
Morphological Characteristics ◽  
Reef Fishes ◽  
Habitat Characteristics ◽  
Habitat Conditions ◽  
Marine Tourism ◽  
Individual Record ◽  
Dive Tourism

The sunfish or mola fish (Mola spp.) is one of marine tourism’ icon in Nusa Penida waters where they appear seasonally. This study was aimed to observe the habitat characteristics of mola fish at the depths of diving tourism where they are visible. The research was conducted from July to December 2019 using survey and descriptive methods to obtain information of mola fish animal linked to habitat conditions. On its appearance data on depths, temperatures, currents, and the presence of symbiotic fishes were observed directly assisted by dive center operators. By comparing the morphological characteristics shown photographically, it is assumed that mola fish in study area is composed by two species, M. alexandrini and M. mola. The highest individual record was in September and decreasing along the incoming months. Mola fish prefers calm deeper water with lower temperatures coincides with the presence of cleaning reef fishes. 

scholarly journals Erythraeid larvae parasitizing dragonflies in Zambia—description of Leptus (Leptus) chingombensis sp. nov. with data on biology and ecology of host-parasite interactions

2019 ◽  
Vol 24 (5) ◽  
pp. 790
Author(s):  
Rafał Bernard ◽  
Magdalena Felska ◽  
Joanna Mąkol
Keyword(s):  
Dna Barcode ◽  
Morphological Characteristics ◽  
Parasite Load ◽  
Ventral Side ◽  
Habitat Conditions ◽  
Local Character ◽  
Host Parasite Interactions ◽  
Group Variation ◽  
The Common ◽  
Host Parasite

A survey of odonate fauna in Zambia (Central Province, Luano District) resulted in discovery of ectoparasitic larvae of Leptus (L.) chingombensis sp. nov. (Trombidiformes: Parasitengona, Erythraeidae) on four species of dragonflies (Odonata) representing four different families assigned to Zygoptera and Anisoptera. The morphological characteristics of the new species is supported with DNA barcode sequence. Despite some intra-group variation related to relatively large sample, the morphological and genetic consistence confirm the common specific identity of the material. A brief comparison of Leptus spp. hitherto known from the Afrotropic as larvae is given. Supplementary data to the descriptions of Leptus (L.) bicristatus Fain et Elsen, 1987, Leptus (L.) aldonae Haitlinger, 1987 and Leptus (L.) soddagus Haitlinger, 1990, based on examination of type material, are provided. In the case of L. (L.) chingombensis sp. nov., the parasite load reached high, previously not recorded for Odonata–terrestrial Parasitengona association values, attaining at 44 and 49 larvae. Clear topic preferences towards the ventral side of the host’s body were recorded, with an additional tendency to distal parts of synthorax and the ventral depression of the abdomen. We hypothesize that the infestation did not take place synchronously at dragonflies emergence, but consisted in repeated infestation events during the recurrent appearance of dragonflies in the contact microhabitat occupied by Leptus. The very local character of the finding along with the regular appearance of larvae parasitizing dragonflies, obviously favoured by specific habitat conditions, no doubts confirms the non-accidental nature of the phenomenon.

scholarly journals Reef fish community structure on three islands of Itaipu, Southeast Brazil

2008 ◽  
Vol 6 (2) ◽  
pp. 267-274 ◽  
Author(s):  
José Policarpo de Mendonça-Neto ◽  
Cassiano Monteiro-Neto ◽  
Luiz Eduardo Moraes
Keyword(s):  
Environmental Gradients ◽  
Seasonal Pattern ◽  
Reef Fishes ◽  
Habitat Characteristics ◽  
Brazilian Coast ◽  
Rocky Reef ◽  
Fish Community Structure ◽  
Rocky Reefs ◽  
Chain Link ◽  
One Year

We provide here the first assessment of the composition, abundance and distribution of rocky reef fishes of Itaipu Sound, Rio de Janeiro, off the southeastern Brazilian coast. Monthly visual censuses, benthic quadrats and chain link transects were conducted over one year on rocky reefs at three islands (Menina, Mãe and Pai). A total of 2466 individual fish, belonging to 29 families and 42 species were recorded. The most abundant fish species were Parablennius pilicornis, Haemulon steindachneri, Orthopristis ruber and Diplodus argenteus. Sheltered and complex habitats showed the most abundant and diverse fish populations. There was a major significant separation between sampling sites and a secondary seasonal pattern. The three sites showed similar fish communities with locally structured environmental gradients according to their inherent habitat characteristics.

Extensive forest management contributes to maintain suitable habitat characteristics for the endangered Atlantic-Gaspésie caribou

2016 ◽  
Vol 46 (7) ◽  
pp. 933-942 ◽  
Author(s):  
Marie-Audrey Nadeau Fortin ◽  
Luc Sirois ◽  
Martin-Hugues St-Laurent
Keyword(s):  
Forest Management ◽  
Maximum Sustainable Yield ◽  
Habitat Characteristics ◽  
Coniferous Forests ◽  
Suitable Habitat ◽  
Habitat Conditions ◽  
Natural Forests ◽  
Forest Practices ◽  
Partial Canonical Correspondence Analysis ◽  
Conservation Of Endangered Species

Extensive forest management aims at minimizing differences between managed and natural forests and at contributing to the conservation of endangered species such as the Atlantic-Gaspésie caribou. The decline of this isolated population was exacerbated by intensive forest practices, as the over-representation of regenerating forests supports high densities of bears and coyotes. These predators select such stands for the high availability of berries and browse suitable to alternative prey, especially moose. Our objective was to verify whether extensive treatments can provide suitable habitat characteristics for caribou. We compared the impacts of different intensive and extensive treatments on habitat attributes known to be selected by caribou, moose, and their predators. We sampled 291 sites in seven treatments and in mature coniferous forests (as the control). A partial canonical correspondence analysis highlighted which treatments maintain habitat attributes that are comparable with those found in mature forests, including some characteristics suitable for caribou such as a substantial biomass of arboreal lichen and a lower availability of resources for predators. Although being more suitable than the three intensive treatments tested, none of the four extensive treatments we studied provided similar habitat conditions to mature forest. Favouring extensive treatments could nevertheless be a relevant conservation compromise at the forest stand level, but their utility remains uncertain under the maximum sustainable yield paradigm as they impact a larger area.

Does the genetic variability of Phragmites australis (Cav.) Trin. ex Steud determine the spatial distribution of the species?

2018 ◽  
Vol 47 (4) ◽  
pp. 405-414
Author(s):  
Dariusz Świerk ◽  
Michał Krzyżaniak ◽  
Tomasz Kosiada ◽  
Piotr Urbański ◽  
Jolanta Behnke-Borowczyk
Keyword(s):  
Genetic Similarity ◽  
Genetic Factors ◽  
Morphological Characteristics ◽  
Common Reed ◽  
Habitat Requirements ◽  
High Tolerance ◽  
Habitat Conditions ◽  
Anthropogenic Substrates ◽  
Reed Plants ◽  
The Common

Abstract This paper is an attempt to answer the question whether common reed specimens growing in a particular habitat are genetically related. We have tried to identify groups of plants homogeneous in terms of habitat requirements and genetic similarity. Our objective was also to answer the question whether habitat conditions can affect the morphological characteristics of plants. Plants and bottom sediments were collected from 40 sites in central Poland, which differ in soil moisture and the degree of urbanization. Our research and analysis confirm the hypothesis to a certain extent. During the study, we identified three groups of plants homogeneous in terms of habitat and genetic factors (CVA model), which constitute 20% of all examined plants. In our opinion, further research is required on a larger population of P. australis in a larger area. The research revealed that plants growing in moist and wet areas were characterized by higher content of chlorophyll in leaves, longer stems as well as thicker and wider laminae. The common reed plants preferred anthropogenic substrates, which did not contain many nutrients, but were abundant in calcium. Our study confirmed the high tolerance of P. australis to soil salinity.

Leaf anatomy of Carex humilis does not correlate with orographic, geological and bioclimatic habitat conditions in C&SE Europe

Biologia ◽  
2014 ◽  
Vol 69 (3) ◽  
Author(s):  
Ksenija Jakovljević ◽  
Jasmina Šinžar-Sekulić ◽  
Snežana Vukojičić ◽  
Nevena Kuzmanović ◽  
Dmitar Lakušić
Keyword(s):  
Principal Component ◽  
Canonical Discriminant Analysis ◽  
Habitat Characteristics ◽  
Morphometric Study ◽  
Geological Condition ◽  
Habitat Conditions ◽  
Adaptive Responses ◽  
Geological Conditions ◽  
Anatomical Characters ◽  
Climatic Characteristics

AbstractThis paper presents the results of a multivariate morphometric study of leaf anatomical characters in different, geographically very distant populations of taxon Carex humilis from Hungary, Romania, Serbia, Bosnia & Herzegovina, Montenegro and Albania with the aim to reveal the trends of population differentiation. Analyses were performed on the cross-section of 173 leaves collected from 12 populations. In order to establish the overall morphological variation and relationships between individuals from all populations, principal component analyses (PCA) and canonical discriminant analysis (CDA) have been done. The UPGMA clustering analyses based on leaf anatomical characters and habitat climatic characteristics were carried out to explore whether the observed anatomical differences are a result of adaptive responses. Regression analysis (linear regression) was performed to identify the level of correlation between leaf anatomical characters and basic orographic, geological, and bioclimatic habitat characteristics. Quite unexpectedly, most of observed groups are formed of geographically very distant populations which are living in extremely different climatic and geological conditions, indicating that general anatomical differentiation in Carex humilis in C&SE Europe cannot be explained by the environmental impacts, and basically do not represent an adaptive response to different climatic or geological condition.

Isoetes ×gopalkrishnae (Isoetaceae), a new interspecific sterile hybrid from central India

Phytotaxa ◽  
2018 ◽  
Vol 362 (1) ◽  
pp. 68 ◽  
Author(s):  
SARVESH KUMAR SINGH ◽  
SANTOSH KUMAR SHUKLA ◽  
NAWAL KISHORE DUBEY ◽  
PRADEEP KUMAR SHUKLA
Keyword(s):  
Transverse Section ◽  
Indian Subcontinent ◽  
Morphological Characteristics ◽  
Uttar Pradesh ◽  
Central India ◽  
Sterile Hybrid ◽  
Habitat Conditions ◽  
Exposed Shore ◽  
Sporangial Wall ◽  
Single Locality

Isoetes ×gopalkrishnae hybr. nov., is described, illustrated and compared with possible parent species. Based on morphological characteristics and habitat conditions, this taxon is considered to represent a sterile hybrid between I. coromandelina and I. panchananii. The new hybrid is amphibious and grows on the exposed shore of an artificial pond. It is known only from a single locality on the Vindhya plateau in Uttar Pradesh, India. It can be distinguished from other taxa by a combination of characters including the lack of a scale, the leaf which is terete in transverse section, velum absent to rudimentary, a sporangial wall with internal pigmentation, rugulate megaspores with a smooth equatorial girdle and microspores with densely echinate to short-cristate ornamentation. It is the first Isoetes hybrid reported from the Indian subcontinent.

scholarly journals ANALISIS KESESUAIAN DAN DAYA DUKUNG WISATA BAHARI DI PULAU MANGKIAN TAMAN WISATA PERAIRAN KEPULAUAN ANAMBAS

2018 ◽  
Vol 46 (2) ◽  
pp. 1
Author(s):  
Yuwanda Ilham ◽  
Yusni Ikhwan Siregar ◽  
Deni Efizon
Keyword(s):  
Carrying Capacity ◽  
Coral Cover ◽  
Environmental Parameters ◽  
Public Perceptions ◽  
Marine Tourism ◽  
Cultural Aspects ◽  
Beach Tourism ◽  
Management And Development ◽  
Tourism Activity ◽  
Dive Tourism

This study aims to determine the suistability and carrying capacity of marine tourism in Mangkian island of the Anambas Islands Marine Tourism Park. The survey was conducted in Mangkian Island, Batu Belah Village, East Siantan District, July to September 2017. Environmental parameters of coral cover (life form), and some aquatic biota strongly support marine tourism activities in this area. The results showed that The level of suitability of maritime tourism is at IKW value for coastal tourism category is very suitable, category diving tour accordingly, and snorkeling tour category according to conditional. The carrying capacity of the area in every tourism activity that is beach tourism 101 people / day, dive tourism 123 people / day and snorkeling tourism is recommended need rehabilitation first. Public perceptions on the management and development of marine tourism, especially in the ecological, economic and socio-cultural aspects of local communities. 

scholarly journals The Invasive of Freshwater Prawn Macrobrachium lanchesteri (De Man, 1911) from Watershed in Palangkaraya University, Kalimantan, Indonesia

2020 ◽  
Vol 9 (2) ◽  
Author(s):  
Anita Maulina ◽  
Angelina Inocencia ◽  
Ebrry Dwi Putra ◽  
Inriyati Satriani ◽  
Linda Lusiana
Keyword(s):  
Morphological Characteristics ◽  
Habitat Characteristics ◽  
Freshwater Prawn ◽  
Tree Cover ◽  
Central Kalimantan ◽  
East Kalimantan ◽  
Macrobrachium Lanchesteri ◽  
De Man ◽  
First Time ◽  
Species Being

Freshwater prawn species Macrobrachium lanchesteri (De Man, 1911) in Kalimantan for the first time was reported to be found only in East Kalimantan and there have been no reports of this species being found in Central Kalimantan. This study aims to reveal the presence of invasive freshwater prawn and habitat characteristics found in the watershed of Palangka Raya University. This study was conducted in October–November 2019 covering five stations. Specimens were collected using a purposive sampling method. Environmental parameter measurements were made including types of substrate, water velocity, tree cover, water depth as well as width. The identification of specimens from the watershed of Palangka Raya University based on morphological characteristics shown that the species very similar to the alien freshwater prawn, M. lanchesteri. Based on the results of research, this report has revealed the presence of this invasive species in Central Kalimantan, Indonesia.

scholarly journals Largest global shark biomass found in the northern Galápagos Islands of Darwin and Wolf

2016 ◽  
Author(s):  
Pelayo Salinas de León ◽  
David Acuña-Marrero ◽  
Etienne Rastoin ◽  
Alan M Friedlander ◽  
Mary K Donovan ◽  
...  
Keyword(s):  
Marine Reserve ◽  
Reef Fishes ◽  
Economic Importance ◽  
Tourism Industry ◽  
Ecological Value ◽  
Quantitative Estimates ◽  
Predatory Fishes ◽  
Dive Tourism ◽  
Galapagos Marine Reserve

Overfishing has dramatically depleted sharks and other large predatory fishes worldwide except for a few remote and/or well-protected areas. The islands of Darwin and Wolf in the far north of the Galapagos Marine Reserve (GMR) are known for their large shark abundance, making them a global scuba diving and conservation hotspot. Here we report quantitative estimates of fish abundance at Darwin and Wolf over two consecutive years using stereo-video surveys, which reveal the largest reef fish biomass ever reported (17.5 t ha-1 on average), consisting largely of sharks. Despite this, the abundance of reef fishes around the GMR, such as groupers, has been severely reduced because of unsustainable fishing practices. Although Darwin and Wolf are within the GMR, they were not fully protected from fishing until March 2016. Given the ecological value and the economic importance of Darwin and Wolf for the dive tourism industry, the current protection should ensure the long-term conservation of this hotspot of unique global value.

Alternative strategy for management of ecotourism in Bunaken Island, Bunaken National Park, North Sulawesi, Indonesia

2015 ◽  
Vol 3 (2) ◽  
pp. 55
Author(s):  
Margresye D. Rompas ◽  
Janny D. Kusen ◽  
Markus T. Lasut
Keyword(s):  
National Park ◽  
Management Strategies ◽  
Alternative Strategy ◽  
Field Surveys ◽  
Alternative Management ◽  
Marine Tourism ◽  
Marine Life ◽  
North Sulawesi ◽  
Tourism Destinations ◽  
Dive Tourism

Title (Bahasa Indonesia): Strategi alternatif untuk pengelolaan wisata bahari di Pulau Bunaken, Taman Nasional Bunaken, Sulawesi Utara, Indonesia The coral reefs of Bunaken Island is one of the attractions of the dive tourism, which has a diversity of marine life and the uniqueness of the objects for divers. To maintain its sustainability, it is necessary to study alternative management strategies of the reefs. This study aimed to describe and evaluate the current conditions in the management of marine tourism in Bunaken Island through formal and informal institutional analysis, and formulate alternative strategies as one of the priority strategies in the management of marine tourism of Bunaken Island. Alternative management strategies were analyzed using SWOT, while collecting data was carried out through field surveys using a questionnaire for visitors, communities, and stakeholder or industry-related tourism. Results of the study recommended that an alternative strategy for the management of Bunaken Island attractions should include: 1) increasing the active participation and involvement of local communities in the management of marine tourism destinations; 2) address the problem of garbage and cleanliness of the area; and 3) optimize the promotion of Bunaken Island adequately as the best maritime destination in the world. Terumbu karang di Pulau Bunaken merupakan salah satu objek wisata selam yang terkenal, di mana memiliki keanekaragaman biota laut dan keunikan panorama obyek penyelamannya. Untuk menjaga kelestariannya, maka perlu dikaji alternatif strategi pengelolaannya agar keberadaannya sebagai salah satu destinasi wisata yang penting bisa berkelanjutan. Penelitian ini bertujuan untuk mendeskripsikan dan mengevaluasi kondisi terkini dalam pengelolaan wisata baharí di Pulau Bunaken secara formal dan nonformal institusional; dan menyusun alternatif strategi sebagai salah satu prioritas strategi pengelolaan wisata baharí di Pulau Bunaken. Alternatif strategi pengelolaan dianalisis menggunakan SWOT, sedangkan pengambilan data melalui survei lapangan dengan menggunakan kuesioner pada pengunjung, masyarakat, dan stakeholder atau industri pariwisata terkait. Hasil penelitian merekomendasikan bahwa alternatif kebijakan untuk pengelolaan objek wisata di Pulau Bunaken meliputi: 1) meningkatkan peran aktif dan pelibatan masyarakat setempat dalam pengelolaan destinasi wisata bahari; 2) mengatasi masalah sampah dan kebersihan kawasan; dan 3) mengoptimalkan kembali promosi Pulau Bunaken secara memadai sebagai destinasi wisata bahari terbaik di dunia.

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