Marco Seminara

• PhD
• Research Director at Sapienza University of Rome

Abstract Characterizing and monitoring changes in biogenic 3‐dimensional (3D) structures at multiple scales over time is challenging within the practical constraints of conventional ecological tools. Therefore, we developed a structure‐from‐motion (SfM)‐based photogrammetry method, coupled with inspection and mesh processing software, to estimate i...

The aim of this study was to gather information about the feeding habits of Salmo cettii (Rafinesque, 1810) in order to improve managing policies for this endangered species. The study area was located in Monumento Naturale Oasi di Ninfa (Central Italy, Latium, UTM 33T 41.582341, 12.955213), and is composed by a lake, formed by several springs, fro...

Yearly variation in water availability pat- terns has a remarkable effect in the presence of freshwater microcrustacean species. We hypothesize that, based on their different reproductive strategies, Cladocera and Copepoda may show differences in their association with ponds of different hydroperiods, i.e. in their indicator value. In order to test...

Microcrustacean assemblages (Cladocera and Copepoda) from astatic ponds and pools of Castelporziano Presidential Estate were analysed to evaluate their role as indicators of functional variations related to the duration of the wet phase. Samples from a subset of 23 water bodies classified as permanent or temporary (based on observations over two de...

Long term monitoring and conservation o/ astatic water: microcrustaceans as /unctional bioindicators o/ changes in the hydrologic regime. Microcrustacean communities (dadocerans and copepods) from astatic ponds of Castelporziano Presidential Estate were analysed to evaluate their role as group/species monitors of functional variations related to th...

Permanent and temporary wetlands in Mediterranean shrublands represent unique repositories of biodiversity, which are increasingly threatened by human-induced habitat loss. The zooplankton of a permanent (P1) and a temporary pond (T35) in the Natural Reserve of Castelporziano, a rare residual stretch of such a shrubland in Central Italy (Latium), w...

Lake Pusiano (northern Italy) has been subjected for more than 20 yr to increasing eutrophication which caused hypereutrophic conditions in the mid-1980s. Due to the introduction of a sewage-treatment network in 1986, the total P concentration in the lake water dropped from 185 μg l−1 in 1985 to 74 μg l−1 in 2003. Although there was a reduction in...

Lake Nemi is an interesting case of anthropogenic overexploitation which has caused its progressive environmental deterioration in the past decades. On this lake historical data about the trophic situation are available from 1975 to 1984. The research performed in 2002-03, about ten years after the diversion of urban waste waters, concerned a biolo...

Twenty astatic ponds near Rome were studied in order to define the relationships between physicochemical variables and macroinvertebrate communities. The main abiotic factor differentiating the ponds was the annual hydrologic cycle. Depth, surface area, and sand percentages in the sediment were higher in permanent ponds, whereas silt+clay content w...

A synthesis is made of biological data collected in the last three decades on five volcanic lakes in Central Italy with the aim of evaluating their environmental status by means of biological parameters related to zooplankton, littoral and profundal zoobenthos frequently used to detect water quality changes in lakes. A number of bioindicators and b...

The composition and temporal succession of the zooplankton communities in two neighboring biotopes (a permanent pond, P17; and a temporary pond, T17) in the natural reserve of Castelporziano (Central Italy) were investigated for one year. Along with some physicochemical parameters (pH, dissolved oxygen, conductivity), the relative abundance of majo...

Summer-winter variations of the physico-chemical features of profundal sediments and of the characteristics of the profundal benthic community in a small, monomictic and eutrophic lake were analyzed in order to define their relations to environmental stress in the hypolimnion. The sediments were rich in P and N compounds. The benthic fauna exhibite...

A one year-study on three temporary ponds in Central Italy examined relationships between the composition and structure of chironomid communities and some environmental variables. The three ponds showed differences in wet phase duration, dissolved oxygen content, and sediment organic matter. In the pond with longer aquatic phase and lower oxygen co...

The macroinvertebrate fauna of a temporary pond located in a natural reserve near Rome was studied in 1989-1990. Sixteen samples were collected from the pond filling until its drying (about every 15-30 days). A total of 15,000 individuals belonging to 86 taxa (most at species level) was collected during the study. 67 taxa belonged to Insecta (mostl...

Sublittoral and profundal chironomid community structure, depth distribution and relationship to the trophic level of the waters were investigated in Lake Vico (Central Italy) during 1985-1986. PCA analysis indicated a depth-dependent group of true profundal stations at 20, 30 and 40 m depths, characterized by Micropsectra, Procladius, Microtendipe...

Preliminary observations on chironomid assemblages in 9 temporary pools of the National Park of Circeo (Central Italy) are reported. A total of 15 genera or species groups (6 Orthocladiinae, 3 Tanypodinae, 1 Tanytarsini and 5 Chironomini) were recorded during March and April, 1986.Psectrotanypus varius, Polypedilum nubeculosum gr.,Chironomus thummi...

A study on the profundal chironomids of the artificial Lake Campotosto (Central Italy) was carried out during the summer/early autumn of 1983 and 1984, in order to analyse their composition and community structure in relation to the lake trophic level assessed by water chemical analysis. A total of about 2000 specimens belonging to 15 taxa were col...

Profundal macrobenthic community in a polluted lake (Lake Nemi, Italy) was analyzed in three distinct surveys from 1976 to 1984, in order to define long-term changes in environmental conditions of sediments. Profundal macrobenthos was mainly composed of Oligochaeta. Only a few Chironomidae and a few other taxa were characteristically found in the s...

The profundal macrobenthos of a regulated lake (Lake Canterno, Central Italy) was investigated to provide information on the structure and composition of this community in a lake long subject to wide fluctuations of the water level and to the influence of domestic sewage. Pollution‐tolerant forms constituted most of the total macrobenthos. It is su...

Late summer and winter structures of the profundal macrobenthos in a polluted lake (Lake Nemi, Central Italy) were compared to verify the relative differences in the faunal structure and the magnitude of the winter recovery of this community. Densities of Oligochaetes and Chironomids did not vary significantly from summer to winter, the latter not...