Declines in diversity of crane flies (Diptera: Tipuloidea) indicate impact from grazing by livestock in the Hövsgöl region of Mongolia

Macroinvertebrate community responses to land use: a trait-based approach for freshwater biomonitoring in Mongolia

“…Catchment land uses by humans cause the most substantial alteration in aquatic biota through interactive effects of nutrient loadings, sedimentation, pollution, erosion, altered channel morphology, and loss of riparian vegetation (Belsky et al 1999;Quinn & Stroud, 2002;Scrimgeour & Kendall, 2003). A number of studies have documented the negative effects of physical habitat alteration due to land use (Wood & Armitage, 1997) such as reduction of suitable habitats (Chutter, 1969), decline in food sources and quality (Broekhuizen et al, 2001), decrease in the density of certain taxa (Quinn et al, 1992), and loss of biodiversity and changes in community structure (Scrimgeour & Kendall 2003;Dolédec et al, 2011;Yadamsuren et al, 2015).…”

Fly family diversity shows evidence of livestock grazing pressure in Mongolia (Insecta: Diptera)

“…For example, aquatic crane flies in Mongolia responded negatively to grazing pressures in a previous stucdy (Yadamsuren et al 2015), but we encountered them at similar frequencies across all levels of grazing. This may be because the larvae respond differently than the adults or because this effect can only be seen at the species level.…”

“…One such anthropogenic impact on the environment, livestock grazing, can be particularly detrimental to biological communities, especially in concentrated amounts (Papanastasis et al 2017), but recognizing the consequences of slight or moderate grazing on the biodiversity of a community can be challenging. Livestock grazing results in the removal of ground cover, the deposition of fecal matter, and the compaction of soil, which can severely degrade habitats especially in combination with watershed and stream channel erosion (Yadamsuren et al 2015). This overuse of land often results in significant reductions in diversity and productivity in both plants and animals (Milton et al 1994), but can also lead to the opposite outcome in terms of biotic diversity.…”

“…Among adult aquatic insects found on Mongolian streambanks, Diptera were most significantly affected by livestock grazing and erosion resulting in a decrease in richness (Hayford and Gelhaus 2010). Crane flies (Tipuloidea) in particular were negatively impacted by grazing in Mongolia because of decreased plant biomass and desiccation of moss, a common larval habitat (Yadamsuren et al 2015). Soil-dwelling Diptera have also been used as effective bioindicators because of the role they play in decomposition, their widespread abundance, and their niche similarity to other soil-dwelling species (Frouz 1999).…”

The genus Phantolabis (Diptera: Limoniidae) new to the Palearctic: description of a new species and re-definition of the genus

“…In the Palearctic, the family is represented by 78 genera and more than 1700 species, including 1130 in the eastern Palearctic (Oosterbroek 2020). Recently, the fauna of the eastern Palaearctic Limoniidae has been intensively studied in Korea (Podenas 2013(Podenas , 2015(Podenas , 2016a(Podenas , 2016b(Podenas , 2016cPodenas & Byun 2013, 2014a, 2014bPodenas et al 2015aPodenas et al , 2015bPodenas et al , 2017Podenas et al , 2019aPodenas et al , 2019b, China (Mao & Yang 2009Men 2015aMen , 2015bMen & Yu 2015;Zhang et al 2012Zhang et al , 2014Zhang et al , 2015aZhang et al , 2015bZhang et al , 2016Zhang et al , 2019, Mongolia (Podeniene & Gelhaus 2010, 2015Podenas & Gelhaus 2011;Yadamsuren et al 2015 ) and Japan (Kato et al 2018).…”