Małgorzata Ożgo

Małgorzata Ożgo
Kazimierz Wielki University in Bydgoszcz · Department of Evolutionary Biology

Dr.

About

55
Publications
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576
Citations

Publications

Publications (55)
Article
Disequilibrium has been estimated for alleles at pairs of loci controlling shell colour and banding in populations of Cepaea nemoralis from northern Europe. There is strong overall positive disequilibrium between pink/yellow colour and unbanded/banded (pink unbanded in excess) but not for colour and the band-modifying loci mid-banded and trifasciat...
Article
Full-text available
Successful rehabilitation programmes of river–floodplain systems require understanding of environmental impacts of restoring hydrological connectivity. The present study is based on a field experiment carried out between 2008 and 2013 in a floodplain of a lowland river in northern Poland, in which two oxbow lakes isolated in the 1920s were reconnec...
Article
Cordylophora caspia Pall. is a highly invasive Ponto-Caspian colonial hydroid with a worldwide distribution. It is a biofouling organism colonizing industrial water installations and causing serious economic problems. Here, we give the first report of its occurrence in southern Baltic coastal lakes, and analyze its distribution in relation to envir...
Article
Full-text available
The role of evolutionary rescue, i.e. adaptive evolution prolonging the persistence of populations declining under environmental stress, has become the focus of intensive research. Sufficiently rapid adaptation is the basis of evolutionary rescue. Recent studies have shown that land snails are capable of adaptive changes within a few decades or an...
Article
Full-text available
Unionid mussels are essential for the integrity of freshwater ecosystems but show rapid worldwide declines. The large-sized, thermophilic Chinese pond mussel Sinanodonta woodiana s.l., however, is a successful global invader, spread with commercially traded fish encysted with mussel larvae; its negative impacts on native mussels are expected. Here,...
Article
Full-text available
An increasing threat to local, native freshwater mussels (Unionida)—an ecologically important but globally alarmingly declining group—is the invasion by exotic bivalves. The Enemy Release Hypothesis predicts that introduced species should benefit from enemy-mediated competition because they are less likely to be harmed by natural enemies, such as p...
Article
Full-text available
Invasive bivalves continue to spread and negatively impact freshwater ecosystems worldwide. As different metrics for body size and biomass are frequently used within the literature to standardise bivalve related ecological impacts (e.g. respiration and filtration rates), the lack of broadly applicable conversion equations currently hinders reliable...
Article
• Local extinctions break species interactions and have cascading effects throughout ecosystems; parasites are often severely affected. The European bitterling, Rhodeus amarus, is a cyprinid fish that parasitizes unionid mussels by laying eggs into the mussel gill cavity, where embryos develop and emerge as active juveniles; this relationship is ob...
Article
Securing adequate supply of high-quality water is of increasing global importance and relies in large part on ecosystem services provided by freshwater biota. Unionid mussels are important keystone species and habitat engineers that shape freshwater ecosystems through water filtration, nutrient cycling and provision of habitats; their rapid global...
Article
Full-text available
An increasing threat to local, native freshwater mussels (Unionida)-an ecologically important but globally alarmingly declining group-is the invasion by exotic bivalves. The Enemy Release Hypothesis predicts that introduced species should benefit from enemy-mediated competition because they are less likely to be harmed by natural enemies, such as p...
Article
Full-text available
• Freshwater mussels are in decline worldwide, with the depressed river mussel Pseudanodonta complanata being one of the rarest and most endangered species in Europe. Invasive mussels are suspected to be an important factor of decline, but there is little information on their interaction with native species. • This study analyzed densities, depth d...
Article
Full-text available
Unionid mussels are among the most threatened groups of organisms globally. Habitat loss is one of the major drivers of their declines and local extinctions. In Poland six native species occur, but data on their present distribution are limited. The aim of this study was to assess unionid mussel species composition and distribution in the Pisa Rive...
Article
Full-text available
The explosive global spread of Sinadonta woodiana, a large‐bodied unionid mussel of East Asian origin, potentially affects the functioning of freshwater habitats and threatens native mussels. Molecular data indicate that its invasion in Europe started with a single colonization event, followed by in situ adaptation. This study traces one of the pos...
Article
Freshwater mussels are widely used in the monitoring of pollution because they are filter-feeding, long-lived animals that tend to accumulate metals in their shells. The temporal scale of such studies can reach thousands of years, since the composition of shells preserves them against decay. This allows us to reconstruct past environmental conditio...
Article
A countrywide data set of 1048 samples of the European land snail Cepaea nemoralis (L.) from Poland was assembled from both published and unpublished sources. Analyses of shell colour and banding polymorphism revealed distinctive patterns of variation. While the frequency of brown shells showed a clear geographical pattern related to climate, other...
Article
Full-text available
Natural history collections are an important and largely untapped source of long-term data on evolutionary changes in wild populations. Here, we utilize three large geo-referenced sets of samples of the common European land-snail Cepaea nemoralis stored in the collection of Naturalis Biodiversity Center in Leiden, the Netherlands. Resampling of the...
Data
Supplementary Data 2 Full details of the original and the resampled collections from Lobith, including a photo of the contemporary habitat.
Data
Supplementary Data 3 Full details of the original and the resampled collections from Empe, including a photo of the contemporary habitats.
Data
Supplementary Data 4 Full details of the original and the resampled collections from Allemansgeest, including a photo of the contemporary habitat.
Data
Supplementary Data 1 Allemansgeest, Empe, Lobith comparisons. Results of the chi-square homogeneity tests. Shell colour: Y, yellow; P, pink; B, brown. Banding: M, mid-banded (00300); T, three-banded (00345); F, five-banded (12345); O, other banding categories.
Poster
Full-text available
In the 21th century, river restoration treatments were carried out throughout the world, and in Europe they were particularly intensive in Great Britain, Austria and France. In Central Europe one of the first complex reconstructions of the river bed was carried out in the River Kwacza, a tributary of the River Słupia (northern Poland). To economize...
Article
Full-text available
Studies documenting Human-Induced Rapid Evolutionary Change (HIREC) routinely compare contemporary allele or morph frequency distributions with historical baselines. All too often, this involves the re-sampling of a population that was sampled at a single time point in the past. However, year-to-year fluctuations in magnitude and direction of evolu...
Article
Full-text available
Studies documenting Human-Induced Rapid Evolutionary Change (HIREC) routinely compare contemporary allele or morph frequency distributions with historical baselines. All too often, this involves the re-sampling of a population that was sampled at a single time point in the past. However, year-to-year fluctuations in magnitude and direction of evolu...
Article
This paper analyzes the long-term changes in concentrations of nutrients in seven rivers located in the Polish part of the southern Baltic coastal zone in response to economic changes that took place between 1988 and 2013. These changes included: construction or modernization of 390 biological waste water treatment plants, reduction of untreated mu...
Article
Full-text available
Mollusc shells from archaeological excavations are often well preserved and allow for species identification and measurements. Large shell assemblages can provide information for environmental reconstruction and investigation of anthropogenic impacts. In this study we compare freshwater mussel shells from a shell midden excavated on a lake island i...
Article
Full-text available
The present study analyses variation in morph frequencies of C. nemoralis along a west-east transect spanning the whole range of the species in continental Europe. The transect passed along the 52°N parallel from the North Sea coast in the Netherlands to the Bug River in Poland (1,215 km). Samples were collected at the crossings of the parallel wit...
Article
Full-text available
At the eastern margins of the geographical distribution in Europe, populations of Cepaea nemoralis are sparse and limited to urban environments to which they are possibly confined by relatively warmer climates. In 1999 we introduced 1101 C. nemoralis individuals originating from nine urban populations to a rural location in the area. The snails est...
Article
Full-text available
We compared shell colour forms in the land snail Cepaea nemoralis at 16 sites in a 7 9 8 km section of the Province of Groningen, the Netherlands, between 1967 and 2010. To do so, we used stored samples in a natural history collection and resampled the exact collection localities. We found that almost all populations had experienced considerable ev...
Article
Full-text available
Variation in the shell colour and banding polymorphism in the land snail Cepaea nemoralis was studied in 260 populations in the region of Gdask, northern Poland. Unlike in other regions of Poland, many populations contain brown shells. Populations from shaded habitats have higher frequencies of brown than those from open and intermediate habitats,...
Article
Full-text available
Organisms provide some of the most sensitive indicators of climate change and evolutionary responses are becoming apparent in species with short generation times. Large datasets on genetic polymorphism that can provide an historical benchmark against which to test for recent evolutionary responses are very rare, but an exception is found in the bro...
Article
Full-text available
The present study reports on a natural experiment with twelve replicates in which rapid, predictable and consistent divergence of Cepaea nemoralis populations occurred in response to repeated selection gradient of adjacent open and shaded habitats. Because the frequencies of various genetically-based phenotypes varied widely among surveyed populati...
Article
Full-text available
Ponds are shallow water bodies of various surface areas, permanent or seasonal, natural or man- -made. In spite of their small sizes, they play a strikingly important role as places of concentratton of biodiversity in the lanclscape. Compared to other freshwater body types, they are inhabited by a larger number of species, including unique, rare, a...
Article
Full-text available
In Cepaea hortensis (O. F. Müller), the shell lip (peristome) is usually white. In most areas the lip col-our allows us to reliably distinguish this species from C. nemoralis (Linnaeus) in which the lip is usually dark brown. Populations polymorphic for lip colour are rare and occur only locally. Here I report on populations of C. hortensis contain...
Article
Full-text available
We studied the frequencies of shell-banding variants of Cepaea vindobonensis (Férussac) in open, semi-open and shaded habitats in two geographically separate but climatically similar areas in southeastern Poland. The faint-banded phenotype was more frequent in open and semi-open habitats than in shaded areas. Within the dark-banded phenotype, those...
Article
Full-text available
Freshwater mussels are important filter feeders strongly influencing ecosystem processes, and they are key organisms to restoring water quality in rivers and lakes. However, they belong to the most imperiled groups of animals worldwide. The main causes of their declines are destruction of habitats, eutrophication, siltation and pollution of waters,...
Article
Full-text available
This paper presents populations of Anodonta cygnaea (L.), Anodonta anatina (L.) and Unio pictorum (L.) inhabiting an artificial pond (area 0.3 ha, depth 4 m) formed at a peat excavation site 13 years prior to the collection of the data. The mussels probably colonized the pond as glochidia attached to host fish introduced for angling or migrating wi...
Article
Full-text available
Questions: How replicable is short-term evolution? Do populations recently exposed to analogous habitat gradients show analogous adaptations? Conversely, how important are chance historic events and genetic constraints in shaping the unique aspects of contemporary evolution? Organisms: Three Cepaea nemoralis population pairs, each pair inhabiting a...
Article
Full-text available
Shell polymorphism in the land snails of the genus Cepaea has been studied for more than a cen-tury. Although these studies have taught us much about the ways in which evolutionary forces work at the population level, many problems are still unresolved. Studies of shell polymorphism, especially in populations living at the edges of the species' geo...
Article
Full-text available
This paper describes populations of the tree frog in the agricultural part of the protected Iandscape area ..Pas pobtzeża na wschód od Ustki" (Coastal belt east of Ustka). It is the first record of this species in the middle part of Pomerania. We determined the presence of the tree frog in 9 out of 16 surveyed water bodies. All water bodies in whic...
Article
Full-text available
Taking up calcium contained in the shells of dead snails or bird eggs is a common phenomenon in land snails. However, calcium deficiency can lead to uptake of calcium contained also in shells of live snails. At several sites we have observed Cepaea nemoralis gnawing at shells of live Helix pomatia and other Cepaea nemoralis. Sometimes the intensity...
Article
Full-text available
Activity of brown and yellow unbanded shelled Cepaea nemoralis (L.) was observed in 23 outdoor cage experiments carried out at various weather conditions in S³upsk, northern Poland. The experiments were carried out at noon local time and lasted one hour; the activity of each snail was scored at 5 minute inter-vals. In the range of temperatures exam...
Article
Full-text available
Polymorphism of Cepaea nemoralis has been studied for several decades. Initially, its extraordinary variation was regarded as nonadaptive; since the 1950's morph frequencies in natural populations have been shown to be affected by selective predation, apostatic selection, area eft'ects, climatic selection, random drift, or a combination of those fa...
Article
Full-text available
Cepaea nemoralis shell colour and banding morphs were studied in southeastern Poland, at the eastern edge of its distribution in Europe. Overall, 73% of shells were yellow, 94% were banded and 73% of banded shells were mid-banded. The frequency of yellow shells was significantly higher in open (median 85%) than in shaded habitats (median 60%). Dist...

Questions

Question (1)
Question
Water transport is suggested as a means of their dispersal, but how likely is that?

Projects

Project (1)
Project
Description from https://confremus.eu/ : "Freshwater bivalves are a large, diverse and important group, since they can dominate the biomass of many ecosystems. Furthermore, they are among the world’s most imperiled taxonomic groups. Freshwater bivalves provide crucial ecosystem functions and services such as water purification and nutrient cycling, thus can be used as nature-based tools for improving ecosystem functions and services as well as representing important indicators of ecosystem health. Through the international cooperation of scientists from multiple disciplines, this Action will aim to fully understand the biodiversity crisis being faced by Europe’s freshwater mussels and develop evidence-based solutions to halt the loss of their biodiversity and ecosystem services." https://www.cost.eu/actions/CA18239/#tabs|Name:overview