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The family Neanuridae belonging to order Poduromorpha, class Collembola includes terrestrial animals which play vital roles in decomposition and nutrient cycle in soil. Up to now, the fauna of this family has not been investigated in various areas of Golestan national Park (Hyrcanian forests). In order to identifying species of the class Collembola in this park, numerous samplings were carried out from soil, humus, and moss in 2015 and 2016. Then, the Collembola specimens were separated by using Berlese Funnel, stored in 75-85 percent ethyl alcohol and identified according to valid identification keys. Meanwhile, the species Friesea afurcata Tullberg, 1869) from the Neanuridae family is reported for the first time in Iran and Golestan province.

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Based on the gut content analysis of 278 specimens of brown trout, Salmo trutta, in the Lar Reservoir and its basin, including streams of Delichay, Ab Sefid, Elarm, Lar and Siah Plas, the summer food habits were found to be general and depended on the abundance of preys. Considering the “index of relative importance” in all stations, the most consumed prey items in the streams were Diptera larva, Ephemeroptera and Trichoptera nymphs, while Hymenoptera constituted the main prey in the reservoir. It was found that the gender had no significant effect on the feeding habits of the adult brown trout. 

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The genus Ratasa Herrich-Schäffer, 1849 and R. alienalis (Eversmann, 1844) are identified based on a single male specimen collected in Golestan National Park, Sulgerd region and preserved in the Hayk Mirzayans Insect Museum. Both genus and species are newly reported for the fauna of Iran. Taxonomic characterization of the species as well as the adult male and male genitalia figures are presented herein.

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The present study was carried out to reveal the checklist of butterfly species in the Tadoba National Park, Chandrapur area of 623 sq. km. Study was carried out from 2011 to 2021. A total of 134 species were recorded, with an addition of 27 new records for Tadoba National Park. Of the total, 60 species were very common, 34 species were common, 9 were frequent common, 19 were rare, and 12 were very rare. Most of the butterflies recorded belong to the Nymphalidae (43 species) with 4 new records. Of Lycaenidae, 41 species with 12 new records. In Pieridae 19 species with 3 new records were recorded. A total of 20 Hesperiidae species with 6 new records and 10 species were recorded from the Papilionidae with 2 new records and one species recorded from the family Riodinidae. About 12 species of the recorded ones come under the protection category of the Indian Wild Life protection Act 1972. The study provided an updated list of butterflies of Tadoba National Park.

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The aim of this study is to make an inventory of the fauna of the Odonata in Theniet El Had National Park, which helps managers to make appropriate decisions for the conservation of these species. The site is entirely forested (Cedrus and Quercus species) with numerous intra-forest natural environments (clearings, grasslands, rocky habitats, springs, pools and ponds, etc.), this mosaic of habitats harbours a remarkable wealth of fauna and flora. Our study focused on the natural and artificial temporary forest ponds, scattered throughout the park, which are of biological and ecological interest for a very wide range of insects, most notably the hemimetabola. These are characterised by a larval stage that is quite different from the adult stage in terms of habitat and lifestyle, namely odonates, where the larvae are aquatic whereas the adults have an aerial life. The inventory of odonates was carried out through monthly surveys of 8 water bodies (7 forest ponds and one hill reservoir) during one year, from March 2017 to February 2018. This preliminary inventory allowed us to inspect 240 individuals of odonates belonging to 18 species i.e. 11 genera and 5 families. The species recorded at the end of this study are the subject of a cartographic representation showing their distribution at the local scale (in the park) and at the national scale.

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This study reports the discovery of Corythucha arcuata (Say), a species previously unrecorded in the Republic of Kosovo. Nine individuals of this species were collected from an Oak tree during the investigation. The findings presented in this study enhance our knowledge of the distribution of C. arcuata within the Balkan region. This discovery underscores the importance of further research to elucidate the factors governing the presence or absence of this species in specific areas. Also, herein we made a list of all known alien-invasive species to Kosovo.

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New taxonomic and faunistic data on spiders of Ecuador are provided, based on a small set of previously unstudied specimens collected at Tiputini Biodiversity Station in Orellana. These specimens belong to five species in three families: Anapistula tiputiana sp. n. (♀; Symphytognathidae) and Pseudanapis yasunica sp. n. (♂; Anapidae) are described as new to science, and the hersiliids Neotama obatala Rheims & Brescovit, 2004, Ypypuera crucifera (Vellard, 1924) and Y. vittata (Simon, 1887) are newly recorded in Ecuador. Illustrations are provided for all treated species.

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Aims: This study aims to economic valuation and assess multiple threats to water and soil resources of the Karkheh National Park and Karkheh Protected Area, southwest of Iran.
Methods: Modeling water budget, runoff, soil erosion, and water pollution potential, was performed using the WaterWorld Policy Support System (WWPSS), process-based hydrological model that utilizes remotely sensed and globally available. Eeconomics value has been calculated using the Substitute Cost Method, for 2021.
Findings: The result showed that the southern area of the Karkheh River basin experienced the minimum precipitation, which has led to a decrease in vegetation and an increase in runoff generation in the southern areas. The total runoff generated in the river basin is based on the upstream-downstream relationships from the north to the south was estimated at 81000648 m³.yr^-1. The soil erosion rate spiked in the southern area with the vegetation decline and the intensification of runoff could be result in water pollution. Economic valuation represents the real value of water generation in the whole Karkheh National Park and Protected Area was US$ 0.104 million, estimated US$ 6.63 per hectare. In addition, the soil conservation economic value in the entire Karkheh National Park and Protected Area was US$ 9.3 million and US$ 912.2, per hectare.
Conclusion: This information provides valuable awareness into the economic value of natural resources and can help environmental assessors activities related to conservation planning. It assists as a useful tool for emphasizing the economic implications of ecosystem degradation and can help for sustainable management.