anthropogenic landscapes
Recently Published Documents


TOTAL DOCUMENTS

201
(FIVE YEARS 119)

H-INDEX

16
(FIVE YEARS 5)

2021 ◽  
Vol 49 (1) ◽  
pp. 51-60
Author(s):  
Evgeny V. Abakumov ◽  
Elena M. Koptseva

Abstract Numerous published studies have shown that soil formation, including primary pedogenesis, is closely connected functionally, energetically and operationally with ecogenesis as a key biogenic exploration mechanism of the Earth’s surface by living organisms. The ontogenetic stage of soil evolution, especially in the initial phases, is determined by geogenic conditions and the intensity and trends of biogenic-accumulative processes in the developing ecosystem. Primary soils are considered critical in the rapid development of the initial ancient biosphere, supporting multiple environmental possibilities for ecosystems in that stage of their formation. Currently, similar models of correlated soil formation and ecogenesis are actualised when new substrates appear suitable for biogenic-abiogenic interactions, which occur in both natural and anthropogenic landscapes. Biotic factors during primary pedogenesis have accumulative and transformative effects on the edaphic component complex. At this stage, the initial pedon is a key functional stage in the evolution of terrestrial ecosystems (biogeocenosis). When restoration of natural ecosystems occurs during the independent growth of exposed substrates, the natural regeneration mechanisms normally occur. These processes are based on the biogenic development of the substrate through the accumulation and transformation of organic matter.


Diversity ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 660
Author(s):  
Melissa A. Reisland ◽  
Nicholas Malone ◽  
Joanna E. Lambert

Behaviors exhibited by prey species towards predators (including humans) can reduce feeding time and increase time spent in vigilance, thereby impacting animal condition and ultimately limit populations, even when actual mortality from predation is low. Here, we test whether behavioral profiles in an endangered ape, Javan gibbons (Hylobates moloch), correspond to varying degrees of human disturbance in a human-impacted sacred forest, Cagar Alam Leuweung Sancang, West Java. Data were collected August 2010–July 2011. Although all groups reacted differently to human presence, overall, gibbons responded by reducing time spent on conspicuous behavior (e.g., vocalizing, feeding, traveling, and social interactions) as the number of humans in the area increased or distance to the nearest human decreased. In addition, gibbon responses to encountering humans were also more like their responses to encountering potential predators than they were to encountering monkeys or other gibbons. These results support the hypothesis that as human presence and encounter rates increase, gibbons alter their behavior in ways consistent with anti-predator behaviors. Assessing how this endangered species responds to human presence is a vital part of their ultimate conservation.


2021 ◽  
Vol 940 (1) ◽  
pp. 012083
Author(s):  
S Abu Deeb ◽  
T Tkachenko ◽  
V Mileikovskyi

Abstract Protective forest plantations (PFP) play an essential functional role in the operation of anthropogenic landscapes (AL). A study of processes in the system “PFP-AL” was conducted in the Boguslav agroforestry state, Kyiv region, Ukraine, to maintain sustainability. A method of ecological monitoring has been proposed to achieve environmental equilibrium stability. The calculations show the stable state of the ecosystem. A graphic-analytical method for quantitative assessment of the potential adverse effects of natural resource management has been proposed. It is shown that additional compensation of adverse effects is necessary, which can be performed by green structures.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Annelore De Ro ◽  
An Vanden Broeck ◽  
Leen Verschaeve ◽  
Ilf Jacobs ◽  
Filiep T’Jollyn ◽  
...  

Abstract Background To set up successful conservation measures, detailed knowledge on the dispersal and colonization capacities of the focal species and connectivity between populations is of high relevance. We developed species-specific nuclear microsatellite molecular markers for the grayling (Hipparchia semele), a butterfly endemic to Europe and of growing conservation concern in North-West Europe, and report on its population genetics, in a fragmented, anthropogenic landscape in Belgium. Our study included samples from 23 different locations nested in two regions and additional historical samples from two locations. We assessed contemporary, long-distance dispersal based on genetic assignment tests and investigated the effect of habitat loss and fragmentation on the population genetic structure and genetic variation using data of nine microsatellite loci. Results Detected dispersal events covered remarkably long distances, which were up to ten times larger than previously reported colonisation distances, with the longest movement recorded in this study even exceeding 100 km. However, observed frequencies of long-distance dispersal were low. Our results point to the consequences of the strong population decline of the last decades, with evidence of inbreeding for several of the recently sampled populations and low estimates of effective population sizes (Ne) (ranging from 20 to 54 individuals). Conclusions Our study shows low frequencies of long-distance dispersal, which is unable to prevent inbreeding in most of the local populations. We discuss the significance for species conservation including future translocation events and discuss appropriate conservation strategies to maintain viable grayling (meta) populations in highly fragmented, anthropogenic landscapes.


2021 ◽  
Vol 15 (4) ◽  
pp. 105-116
Author(s):  
S. S. Frankov ◽  

Introduction. Most of the Dniester basin is located within Ukraine, but the study of flora and fauna of its individual territories is insufficient, particularly, in terms of ornitho­logy of the forest-steppe zone. Materials and discussions. Active study of the bird population of the region was started by Polish researchers in the first half of the 18th century. A significant contri­bution to the study of ornithocomplexes of the then Podolsk province was made by K. F. Kessler, who published a three-volume work on birds of the Kyiv educational district, which also included the above region. Noteworthy are the works by E. Eichwald, G. Belke, V. Taczanowski and A. Brauner. A detailed summary of the history of the fauna of Podillya and its current state, at the beginning of the 20th century, including birds, was prepared by V. P. Khranevych. Data on the then state of the avifauna of the Kherson province, which included part of this region, is provided in the works by I. K. Pachoskii. There are almost no publications on the bird population of the region in the period from the 1930s to the present. At present, the avifauna of the Ukrainian part of the Dniester forest-steppe zone has not been studied fully enough. Available publications and monographs concern either individual species and groups of birds, or the entire territory of Vinnytsia or Odessa regions. Among them are the publications by O. A. Matviichuk and the monograph “Cadastre of terrestrial tetrapods of Vinnytsia region”. However, most of these works relate to the Southern Bug basin. The avifauna of the Dniester basin is presented rather fragmentarily. The monograph by H. I Denysyk “Zoocenoses of anthropogenic landscapes of Podillya” deserves special attention. However, it concerns anthropogenic landscapes of the Podolsk region as a whole, and does not fully cover the features of the spatial distribution of fauna, including birds, in the Dniester basin within the forest-steppe zone of Ukraine. Conclusions. The analysis of the available literature has shown that, despite a nearly 300-year history of research, this region is currently one of the least surveyed in terms of bird population. The history of the study of birds in the above area can be divided into four periods of research with different intensity and nature of publications. Taking into account the data of the analysis, it can be stated that the available data are extremely poor to form an idea of the dynamics and current state of the avifauna of this region. Therefore, it is obvious that there is an urgent need for targeted comprehensive research that will address most of the above issues.


Author(s):  
João Marques ◽  
Joy Liu ◽  
Maria C. Cunha ◽  
Kimberly J. Van Meter ◽  
Nandita B. Basu

AbstractNitrogen (N) legacies have built up in anthropogenic landscapes over decades of agricultural intensification, and these legacies lead to time lags in water quality change measurable even beyond the moment of application of N. It is important to understand these legacies to quantify the relationship between N inputs and N concentrations in streams and implement best management practices for water quality improvement; however, little is known about the magnitude of legacies in various landscape elements like soils and groundwater. Here, we have used the ELEMeNT (Exploration of Long-tErM Nutrient Trajectories) model to explore the buildup and depletion of N legacies over a 216-year period, across the Mondego River Basin, a 6645-km2 watershed in Portugal, where human interventions have considerably changed the characteristics of the basin to prevent floods and improve farming conditions in recent decades. The results show that the increase in the amount of inorganic fertilizer applied was the main driver for the anthropogenic N loads in the watershed from 1950 until the beginning of the 1990s. The N inputs have been decreasing since then, but N loads in the river did not document any decrease till the 1990s; after which there was a decline. This time lag between the N inputs to the watershed and the N loads in the river (about two decades) is a function of accumulation of N legacy.


2021 ◽  
Author(s):  
Muhammad Umar ◽  
◽  
Mubashar Hussain ◽  

Insect biodiversity drives ecological functioning and provides ecosystem services in different landscapes. Protected areas with the least anthropogenic disturbances provide resources with the least disturbance in habitat favouring insect species belonging to different guilds to coexist and contribute to the ecosystem processes. Studies have highlighted the significance of anthropogenic landscapes including agricultural ecosystems for harboring rich native biodiversity. To understand the species composition and abundance agricultural landscape, we explored insect fauna in Deva Vatala National Park (DVNP), Bhimber (Azad Kashmir), and associated croplands of Gujrat, Punjab, Pakistan. We aimed to assess the abundance, richness and diversity of the insect orders, families and species found in the two habitats i.e. national park and croplands. Fortnightly surveys were conducted during 2017-2019. Sampling methodology consisted of handpicking, using sweep nets, light traps, pitfall traps and insect collection was identified by using taxonomic keys. A total of 239 insect species representing 10 orders and 69 families were collected and identified from both habitat types. For both diversity and abundance, we detected a significant difference in community composition at species, family and order levels. Several insect orders and families demonstrated significant differences (p< 0.05) in either abundance or richness or both between the two types of habitats. Several families of Coleoptera, which contains dung beetles, ground beetles, ladybird beetles showed greater richness in DVNP. However, we also detected that several insect orders showed greater richness in the croplands of Gujrat. But we observed the pattern of the greater abundance of insect orders in DVNP. Both types of habitat can have important consequences on insect fauna having great importance in the ecosystem services and functions. Protected areas nearby associated croplands have the potential to contribute immensely to biodiversity conservation and ecosystem service provision both at the local scale and the landscape scale.


2021 ◽  
Vol 906 (1) ◽  
pp. 012048
Author(s):  
Tatiana Kuderina ◽  
Otto Chkhetiani ◽  
Arseni Kudikov ◽  
Maria Artamonova

Abstract Climate and environmental changes on Earth have become modern challenges to humanity. The main factor affecting the landscapes of Russia is an increase in air temperature and a decrease in precipitation. Because of these processes, the amount of aerosols in the near-ground atmosphere of the landscapes of the ETR (European territory of Russia) increases. The aim of the study is to determine the atmogeophysical and atmogeochemical indicators that reveal the interaction of the atmosphere and the diversity of natural landscapes in European Russia. Landscape-geochemical research methods make it possible to study geosystems with the participation of all landscape components and actual migration processes, especially the atmospheric migration of chemical elements. To determine the modern atmogeochemical existence, field comprehensive studies of the potential emission of matter in all natural zones of the ETR were carried out submeridionally - in the landscapes of the steppe, forest-steppe, forest and tundra zones of the ETR. The research results show that in the submeridional profile, the mass concentration of aerosols decreases regularly from south to north, the minimum concentrations of atmospheric aerosols are observed in the forest zone, in the tundra there was a slight increase due to anthropogenic landscapes and the influence of the sea. Analysis of the chemical composition of aerosols revealed that, among the elements of global importance, aluminosilicates naturally increase to the south of the ETR as elements of clay minerals that are widespread in the Russian Plain. The maximum phosphorus content occurs in the residential area with agricultural landscapes. Sulfur concentrations are confined to the semiarid zone of the ETR, then decrease in the forest zone and increase again in the technogenic regions and the tundra belt of the Kola Peninsula, surrounded by the sea. The concentrations of chemical elements of regional and local distribution in atmospheric aerosols are more differentiated on the ETR and depend on the natural and technogenic features of each region. Thus, heavy metals are more common in the Plain territories of the forest-steppe and forest zones of the ETR and are confined to the bedrock and technogenic sources. High concentrations of calcium and strontium are associated with areas of weathering of carbonate rocks. In general, increased concentrations of atmospheric aerosols with an increased content of anthropogenic elements are observed during the western and southern transport of air masses. At the same time, the amount of rainstorm precipitation increases when these aerosols act as condensation nuclei. To assess the current state of the atmosphere at the ETR, it is necessary to continue field measurements and organize European annual and seasonal geochemical monitoring at stationary observation points.


2021 ◽  
Author(s):  
Asef Darvishi ◽  
Maryam Yousefi ◽  
Naghmeh Mobarghaee Dinan ◽  
Per Angelstam

Abstract Context Evidence-based knowledge is crucial for place-based knowledge production and learning towards sustainable landscapes through stewardship and integrated spatial planning. Objectives We focus on the landscape service concept as a tool, and three fundamental challenges for its use: (1) how to monitor benefits provided by different landscapes; (2) to demonstrate trade-offs and synergies among benefits in a landscape; and (3) to discuss how to incorporate results from analyses into landscape stewardship and planning. Methods As a case study we chose the Iranian Qazvin province with diverse natural and anthropogenic landscapes, and top-down societal steering. Five landscape services (water yield, water regulation, pollination, actual net primary production (NPPact) and social-cultural connectivity) were assessed and compared. Results All landscape services were significantly correlated. Major trade-offs and synergies among services were between NPPact and water yield and regulation. Trade-off and synergy clusters showed that landscape functions depend on both natural and anthropogenic landscape patterns and processes. Conclusions Providing transparent data about trade-offs and synergies among landscape services can facilitate learning about which services are important among landscapes. For each of six settings we suggest action plans. We discuss the role of Iranian landscape stewardship and planning, and integrative research needs.


2021 ◽  
Author(s):  
Yasmine Antonini ◽  
Marina V. Beirão ◽  
Fernanda V. Costa ◽  
Cristiano S. Azevedo ◽  
Maria M. Wojakowski ◽  
...  

AbstractRestoration of tropical riparian forests is challenging, since these ecosystems are the most diverse, dynamic, and complex physical and biological terrestrial habitats. This study tested whether biodiversity can predict ecosystem functions in a human-impacted tropical riparian forest.We explored the effects of several biodiversity components (taxonomic or functional groups) on different ecosystem functions associated with restored riparian forestsOverall, 49% of the biodiversity components showed positive effects on ecosystem functions, each component to a different degree. In general, our results showed that both taxonomic and functional biodiversity had strong effects on ecosystem functions indicating that floral and faunal biodiversity enhanced the multifunctionality of these restored riparian tropical forests.These findings indicate that in restored riparian forests, recovery of biodiversity is followed by improvement in important ecosystem functions that are the basis for successful restoration. Future research and policy for restoration programs must focus on restoring elementary faunal and floral components of biodiversity in order to promote ecosystem multifunctionality.


Sign in / Sign up

Export Citation Format

Share Document