Abstract
The species Carex pulicaris L. was found on Trstenik Moor (Gorski kotar). This is the first find- ing of this plant species in Croatia, lying on the southern border of its range.
Keywords
Carex pulicaris, Croatia
2001
Natura Croatica, Vol. 10 No.4
Abstract
Bryozoans (Bryozoa) are among the least known phyla in the Adriatic Sea. In the past 250 years of research only 184 species have been recorded along the East Adriatic coast. Localities in the index of Bryozoa are divided into Northern, Central and Southern Adriatic. Synonyms are also provided.
Keywords
Bryozoa, index, Adriatic Sea, bibliography
Abstract
During the period of 1992–1993 and autumn of 1995 the bird collection from Dubrovnik’s Museum was revised. A total of 946 prepared specimens (322 skins, 348 mounts, 275 mounts in dioramas and 1 stomach) was revised; the oldest were 3 preparations from 1867. The collection was formed by 69 collectors and contains 238 bird species from 18 orders and 57 families, 60% of all recorded birds species in Croatia. Nonpasseriformes are represented by 139 species, 36 families and 17 orders. The Order Passeriformes is represented by 99 species from 21 families. The oldest preparations of Anas querquedula, Vanellus vanellus and Coccothraustes coccothraustes date from 1867. For 335 preparations the locality data are missing and 470 preparations are without collector’s name. The species Ficedula semitorquata is the first finding for Croatia and Gavia immer is the fourth finding for Croatia. The collection contains rare and interesting species, such as Pelecanus onocrotalus, Plegadis falcinellus, Neophron percnopterus, Gyps fulvus, Accipiter brevipes, Crex crex, Tetrax tetrax, Prunella collaris and Hippolais olivetorum. The species Larus genei is without data, so it is not acceptable as a first record for Croatia. There are also interesting winter records of Alca torda and Fratercula arctica. In the collection 71 species are from spring migration, 83 from autumn migration, and there are 51 nesting species out of 54 over-wintering birds species in the Dubrovnik area.
Keywords
ornithology, collection, diversity, skins, Dubrovnik, Croatia
Abstract
This study reports intraspecific nest parasitism in starlings (Sturnus vulgaris) in the village of Mokrice, northwestern Croatia, in 1999 and 2000. Twenty one (30.5%) out of 70 observed nests during the two years contained one or two parasitic eggs. One parasitic egg was laid in 17 (24.8%) nests and two in 4 (5.7%) nests. No statistically significant differences were found between egg dimensions (length, breadth, volume, egg shape index) of parasitic females and hosts. Also, there was no statistically significant correlation between egg volume of parasitic and host eggs. There is thus no evidence that parasitic females select host nests on the basis of egg dimensions of the host. Parasitic females laid their eggs mostly in host nests that already had two or three eggs (in 72.8% cases).
Keywords
starling, Sturnus vulgaris, intraspecific nest parasitism, NW Croatia
Abstract
In this work the results of phytosociological analysis of the water plant and swamp vegetation in the locality of Virovi in Slavonia (Croatia) are given. The analysis includes associations from the class Lemnetea, the order Hydrocharietalia (Hydrocharitetum morsus-ranae) and the order Utricularietalia minoris (Lemno-Utricularietum vulgaris), from the class Potametea, the order Potametalia (Ceratophylletum demersi and Nymphaeetum albo-luteae) and from the class Phragmiti-Magnocaricetea, the order Phragmitetalia (Typhetum angustifoliae).
Keywords
waterplant vegetation, swamp vegetation, Croatia
Abstract
A widespread conifer forest decline in Europe and North America has been expressed through various combinations of symptoms. In our study, unspecific biochemical indicators and histological findings were compared with visually assessed damage symptoms in order to get a detailed diagnosis of a single declining Picea omorika Pan~i} tree. By measuring the content of photosynthetic pigments and proteins as well as total guaiacol peroxidase activity we confirmed an altered physiological state of the investigated tree. Histological analysis showed specific patterns of decline for Mg and K deficient trees.
Keywords
Picea omorika, photosynthetic pigments, proteins, peroxidase activity, needle histology
Abstract
New localities for 13 neophytes in the area of the County of [ibenik and Knin are given in this paper. The neophytes – Amaranthus crispus (Lesp. & Thev.) N. Terracc., Euphorbia nutans Lag., Tagetes minuta L., Eleusine indica (L.) Gaertner and Panicum dichotomiflorum Michaux are mentioned for the first time for the researched area. Data are given for new findings of neophytes previously recorded in the area investigated – Chenopodium ambrosioides L., Euphorbia maculata L., Ambrosia artemisifolia L., Artemisia verlotiorum Lamotte, Aster squamatus (Sprengel) Hieron., Galinsoga parviflora Cav., Solanum elaeagnifolium Cav. and Paspalum paspalodes (Michx.) Scribner.
Keywords
neophytic flora, new localities, County of [ibenik and Knin, Croatia
Abstract
During research into neophyte distribution in Croatia, a total of 332 new localities for 21 neophyte species has been discovered. The most numerous are new localities of Bidens subalternans (52), followed by Impatiens glandulifera (49), Aster squamatus (43), Impatiens balfourii (29), Datura inoxia (25), Euphorbia prostrata (11), Galinsoga parviflora (17), Amaranthus albus (14), Galinsoga quadriradiata (15), Diplotaxis erucoides (11), Xanthium strumarium ssp. italicum (9), Phytolacca americana (12), Artemisia verlotiorum (7), Chamomilla suaveolens (7), Xanthium spinosum (7), Eleusine indica (6), Euphorbia maculata (7), Ambrosia artemisiifolia (5), Paspalum paspalodes (3), Euphorbia nutans (2) and Paspalum dilatatum (1). The majority of the species investigated occur in all localities in a great number, only a few of them occurring individually.
Keywords
neophytes, Croatia
Abstract
A 103 cm long core from the Soline Channel (Mljet Island, Adriatic Sea), which is at present a surface connection between the peculiar marine Mljet Lakes and the open sea, indicates substantial changes of the sedimentary environment in the Holocene. In the layer dated to 4,600 B.P., 25–30 cm below the bottom (which is at 2.8 m depth), freshwater algae represented by species of Chara/Nitella were found along with the gastropod Limnea stagnalis. This dominantly brackish sediment extends from 10 to 60 cm below the bottom. Above that interval marine sediment was found and below it quartz dominated the subareal or freshwater sediment. This indicates that the surface marine connection between Mljet Lakes and the sea was established after deposition of freshwater/brackish sediments i.e. not earlier than ca. 4 kyr B.P.
Keywords
freshwater deposits; ostracods; gastropods; foraminifers; Characeae; Quaternary; Croatia