scholarly journals Structure and population dynamics of Pterostichus spp. beetles (col. Carabidae) in three types of wetland

2014 ◽  
Vol 66 (2) ◽  
pp. 765-773 ◽  
Author(s):  
Monika Lik ◽  
Jacek Zieliński
Keyword(s):  
Population Dynamics ◽  
Riparian Forest ◽  
Habitat Type ◽  
River Floodplain ◽  
Vistula River ◽  
The City

This study presents research on communities of Pterostichus spp. beetles found in 2001 and 2003 in three types of wetland: elm and ash riparian forest (RF), poplar monoculture (P) and extensively managed meadow (M). All sample plots were located near the city of Bydgoszcz (53?, 9?N18?E) on the Vistula River floodplain. During both years, 11 species of genus Pterostichus spp. were found. In 2001, from all sample plots 886 beetles were collected; in 2003, 5 963. In both years, most specimens came from plot RF (636 in 2001 and 3 544 in 2003). From plot P, 1 862 specimens of Pterostichus spp. beetles were collected and from plot M, 807 specimens. No statistically significant influences of the marshland habitat type and year of research on communities of Pterostichus spp. beetles were revealed.

scholarly journals Pollination Potential of Riparian Hardwood Forests—A Multifaceted Field-Based Assessment in the Vistula Valley, Poland

Forests ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 907
Author(s):  
Andrzej N. Affek ◽  
Edyta Regulska ◽  
Ewa Kołaczkowska ◽  
Anna Kowalska ◽  
Katarzyna Affek
Keyword(s):  
Agricultural Landscape ◽  
Riparian Forest ◽  
Field Measurements ◽  
Threshold Value ◽  
Early Spring ◽  
Hardwood Forests ◽  
Floral Resources ◽  
Vistula River ◽  
Pollinator Abundance ◽  
Nesting Sites

Riparian forests with oaks, ashes and elms, now highly fragmented and rare in Europe, are considered hotspots for ecosystem services. However, their capacity to provide pollination seems to be quite low, although reports from in-situ research supporting this view are scarce. Our goal was therefore to thoroughly assess their pollination potential based on multifaceted field measurements. For this, we selected six test sites with well-developed riparian hardwood forests, located in the agricultural landscape along the middle Vistula River in Poland. We used seven indicators relating to habitat suitability (nesting sites and floral resources) and pollinator abundance (bumblebees and other Apoidea) and propose a threshold value (AdjMax) based on value distribution and Hampel’s test to indicate the level of pollination potential for this type of riparian forest. The obtained AdjMax for bumblebee density was 500 ind. ha−1, for Apoidea abundance—0.42 ind. day−1, while for nectar resources—200 kg ha−1. We demonstrate that the investigated small patches of the riparian hardwood forest have a higher pollination potential than reported earlier for riparian and other broadleaved temperate forests, but the indicators were inconsistent. As forest islands in the agricultural landscape, riparian hardwood forests play an important role in maintaining the diversity and abundance of wild pollinators, especially in early spring when there is still no food base available elsewhere.

scholarly journals Invasive Plant Species Distribution Is Structured by Soil and Habitat Type in the City Landscape

Plants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 773
Author(s):  
Ilona Szumańska ◽  
Sandra Lubińska-Mielińska ◽  
Dariusz Kamiński ◽  
Lucjan Rutkowski ◽  
Andrzej Nienartowicz ◽  
...  
Keyword(s):  
Distribution Pattern ◽  
Species Distribution ◽  
Human Activities ◽  
Invasive Plant ◽  
Habitat Type ◽  
Permanent Plots ◽  
Human Land Use ◽  
And Migration ◽  
Migration Pathways ◽  
The City

Invasive alien species (IAS) is a global problem that largely relates to human activities and human settlements. To prevent the further spread of IAS, we first need to know their pattern of distribution, to determine which constitutes the greatest threat, and understand which habitats and migration pathways they prefer. Our research aimed to identify the main vectors and distribution pattern of IAS of plants in the city environment. We checked the relations between species distribution and such environmental factors as urban soil type and habitat type. We applied data on IAS occurrence (collected in the period 1973–2015) in 515 permanent plots with dimensions of 0.5 × 0.5 km and analyzed by direct ordination methods. In total, we recorded 66 IAS. We found a 27% variance in the IAS distribution pattern, which can be explained by statistically significant soil and habitat types. The most important for species distribution were: river and alluvial soils, forests and related rusty soils, and places of intensive human activities, including areas of urbisols and industriosols. Our results provide details that can inform local efforts for the management and control of invasive species, and they provide evidence of the different associations between natural patterns and human land use.

scholarly journals Altitude, habitat type and herbivore damage interact in their effects on plant population dynamics

PLoS ONE ◽  
2018 ◽  
Vol 13 (12) ◽  
pp. e0209149 ◽  
Author(s):  
Tomáš Dostálek ◽  
Maan Bahadur Rokaya ◽  
Zuzana Münzbergová
Keyword(s):  
Population Dynamics ◽  
Habitat Type ◽  
Plant Population ◽  
Plant Population Dynamics ◽  
Herbivore Damage

scholarly journals Does the vicinity of the Black-Headed Gull colony (Chroicocephalus ridibundus) increase the breeding success of the Common Tern (Sterna hirundo) on the islands of the middle Vistula?

2018 ◽  
Vol 16 (4) ◽  
pp. 43-50
Author(s):  
Dariusz Bukackiński ◽  
Monika Bukacińska ◽  
Milena Grabowska
Keyword(s):  
Hatching Success ◽  
Single Species ◽  
Common Tern ◽  
Egg Mass ◽  
Chick Survival ◽  
Effective Protection ◽  
Vistula River ◽  
Nesting Site ◽  
The Common ◽  
The City

We conducted our study in the Common Tern colony (STH) located on an island in the middle Vistula River course, at the height of the city of Dęblin (km 393–394 of the waterway), in 2017. Our goal was to investigate some aspects of the biology and reproductive ecology of this species. Due to the fact that STH breeds both in single-species as well as in two- or multi-species colonies, in associations with Little Terns (Sternula albifrons), Black-Headed Gulls (Chroicocephalus ridibundus) (LAR) and/or Mew Gulls (Larus canus), we wanted to investigate whether the neighborhood of other species (in this case LAR) affected hatching success and chick survival in STH. Our results clearly show that the presence of breeding terns in the neighborhood of the LAR colony was not accidental and/or caused by the lack of space on the island and/or the possibility of nesting elsewhere. The height of nesting site, type of nesting habitat, clutch size, mean egg volume and mean egg mass of these STH pairs did not differ significantly from those that formed a single species colony, on the same island but several hundred meters away. However, STH nests in the neighborhood of the LAR colony were established much earlier and both the hatching success and chick survival of STH during the early-chick stage were twice as high. Thus, we can conclude that the LAR colony could provide an effective protection against predation of crows, magpies and gulls, dangers which accounted for the vast majority of STH nest failures in the year of our study.

scholarly journals Population dynamics of spotted wing drosophila (Drosophila suzukii) in orchards in the Zagreb area

2020 ◽  
Vol 23 (3-4) ◽  
pp. 91-102
Author(s):  
Ivana Pajač Živković ◽  
Irena Brlić Puškarić ◽  
Darija Lemić
Keyword(s):  
Invasive Species ◽  
Population Dynamics ◽  
Overlapping Generations ◽  
Host Plants ◽  
Climatic Conditions ◽  
Spotted Wing Drosophila ◽  
Drosophila Suzukii ◽  
Research Population ◽  
Zagreb Area ◽  
The City

The invasive species Drosophila suzukii (Matsumura, 1931), the spotted wing drosophila, was first recorded in Croatia in 2010. Since then, it has spread on Croatian territory but its presence has not yet been confirmed in the City of Zagreb. In this research population dynamics of D. suzukii was investigated in three orchards in Zagreb (Maksimir, Jelenovac, Zelenjak) in the period from 20th of March to 27th of November 2017. Feeding traps with apple vinegar were used for catching D. suzukii. The flight began in the period from 27th of June to 11th of July and lasted until 27th of November. The total pest catches were 874 specimens (Jelenovac 187, Maksimir 232 and Zelenjak 455). From September to November there was a continuous flight and a large increase in the number of caught flies, suggesting the presence of more overlapping generations. Besides the host plants, the development of the pest in this area is also enabled by suitable climatic conditions. The present population in the City of Zagreb County poses a danger to fruit producers in the Zagreb County. The results of this research are a contribution to better understanding of the population and the spread of the pest in Croatia.

scholarly journals Isolation of entomopathogenic nematodes in the west region of Santa Catarina, Brazil

2020 ◽  
Vol 87 ◽  
Author(s):  
Dannyelle Cristine Orsolin de Morais ◽  
Marco Aurélio Tramontin ◽  
Vanessa Andaló
Keyword(s):  
Entomopathogenic Nematodes ◽  
Riparian Forest ◽  
Lolium Multiflorum ◽  
Soil Samples ◽  
Pennisetum Purpureum ◽  
Native Forest ◽  
Potential Candidate ◽  
Santa Catarina ◽  
Pasture Area ◽  
The City

ABSTRACT: Entomopathogenic nematodes (EPNs) are potential candidate for integrated pest management programs. As little is known about the presence of these organisms in the state of Santa Catarina, it was aimed to perform soil sampling in the cities of Chapecó, Palmitos, Seara and Concordia for the isolation of EPNs. In total, 200 samples (100 g soil) were collected. In Chapecó, 40 samples from soil containing green manure (Raphanus sativus), five samples from native forest area and five samples from riparian forest were collected. In the city of Palmitos, 40 soil samples were obtained in the areas of soybean (Glycine max), corn (Zea mays), oats (Avena strigosa), and pasture (Pennisetum purpureum), and in each location 10 samples were taken. Sixty soil samples were collected in the city of Concordia, in a pasture area (A. strigosa). In Seara, the 50 soil samples were collected at a pasture consortium site between ryegrass (Lolium multiflorum) and black oats (A. strigosa). For the isolation, the collected soil samples were conditioned in 350 mL plastic containers and sent to the laboratory of the university. Later, four larvae of Tenebrio molitor of last instar were inserted, and the sets were maintained at the temperature of 25°C for seven days. After this period, the presence of dead larvae was verified, and the confirmation of the mortality by EPNs was evaluated using of White’s trap. The positive samples for EPNs were obtained from the cities of Chapecó and Concordia, which corresponded to 2% of the total soil samples.

scholarly journals Population Structure of Harvested Red Foxes (Vulpes vulpes) and Coyotes (Canis latrans) on Prince Edward Island, Canada

2013 ◽  
Vol 126 (4) ◽  
pp. 288 ◽  
Author(s):  
Wendela Wapenaar ◽  
Fiep De Bie ◽  
David Johnston ◽  
Ryan M. O'Handley ◽  
Herman W. Barkema
Keyword(s):  
Population Dynamics ◽  
Wildlife Management ◽  
Urban Areas ◽  
Vulpes Vulpes ◽  
Prince Edward Island ◽  
Canis Latrans ◽  
Habitat Type ◽  
Red Foxes ◽  
Wild Canids ◽  
Agricultural Areas

An understanding of the population dynamics and habitat of wild Red Foxes (Vulpes vulpes) and Coyotes (Canis latrans) is a prerequisite to wildlife management. This information is also important in assessing the risk these wild canids pose to the public and domestic animals. On Prince Edward Island, information on age, sex, reproductive activity, and habitat use of 271 Red Foxes and 201 Coyotes was collected in the hunting and trapping season of 2004–2005. The estimated age of Red Foxes and Coyotes ranged from 0.5 to 13.5 years. A large proportion of harvested Red Foxes and Coyotes (58% and 48%, respectively) consisted of juveniles. The sex ratio was not significantly different from 1:1 for either species. Average litter size was 5.0 and 5.2 for Red Foxes and Coyotes, respectively. Number of placental scars ranged from 0 to 7 in Red Foxes and from 0 to 11 in Coyotes. Agricultural areas were the main habitat type (52%) of harvested Red Foxes. For harvested Coyotes, forest was the main habitat (44%), followed closely by agricultural areas (43%). Urban areas were a significant part (13%) of the habitat of Red Foxes. These data can be used to monitor population dynamics over time, provide information for wildlife management, and provide information on potential risk areas for disease transmission by wild canids.

scholarly journals The effect of habitat conditions on the abundance of populations and selected individual and floral traits of Impatiens glandulifera Royle

2015 ◽  
Vol 37 (1) ◽  
pp. 51-58 ◽  
Author(s):  
Kinga Kostrakiewicz-Gierałt
Keyword(s):  
Riparian Forest ◽  
Light Availability ◽  
Forest Edge ◽  
Floral Traits ◽  
Fallow Land ◽  
Seedling Mortality ◽  
Impatiens Glandulifera ◽  
Vistula River ◽  
Individual Traits ◽  
Spur Length

Abstract The effect of site conditions on the abundance of populations of I. glandulifera, selected individual features (height and width of stems, number of whorls and side branches, flower production), and floral traits (total length of flowers, length and width of lower sepal, spur length) were investigated in years 2013-14. Observations were conducted on fallow land, at roadsides, along riverbanks and edges of a riparian forest as well as in a willow thicket and a riparian forest inside located in the Vistula River valley in southern Poland. In these stands, taken successively, light availability gradually diminished, while plant canopy height and soil moisture increased. The low abundance of the population on the fallow land may have been caused by low soil humidity triggering seedling mortality, whereas the low abundance in the interior of the riparian forest may have been due to seasonal water stagnation hampering the development of offspring. The increasing values of individual traits from the fallow land to riparian forest edge might be linked to growing lateral shade, whereas the much lower values in the willow thicket and forest interior might be caused by full shade. Individuals growing on the fallow land, at roadsides, and along riverbanksproduced flowers with small total lengths and large lower sepals and spurs, whereas individuals occurring in willow thickets and riparian forests showed opposite tendency. The considerable stem dimensions and substantial production of large flowers may augment chances for successful resource capture and pollinator visits in open sites, while the reduced size of individuals and moderate production of small flowers may be sufficient for the maintenance of populations in closed habitats

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