Table Numeric data about boreal bats




старонка1/3
Дата канвертавання19.04.2016
Памер441.83 Kb.
  1   2   3
Table 1. Numeric data about boreal bats
(Main sources: Masing, 1990, 1992; Schober & Grimmberger, 1998; Masing et al., 1999)


Species

Year of first find

in Estonia



Number of sites in Estonia

1854-1974



Number of sites in Estonia

1975-1987



Northward

(-southward) distance of the northern distribution limit of the species from the northern coast of Estonia,

km


Number of offspring per female per year

Known life span limit in years

***


Longest known movement km

***


Pond Bat

1947, 1952

10

27

100

1

20.5

124

330


Daubenton’s Bat


1854, 1861

20

53

400

1

23.5

28


101

260


Brandt’s or Whiskered Bat

?, 1908

5

3













Brandt’s Bat

(1948), 1980

(4)

18

600

1

18.5

19.5


30

700


Whiskered Bat

(1935), 1987

(1)

3

300?

1

23

240


Natterer’s Bat

1924, 1927

1

24

200

1

11

17.5


102

185


Brown Long-eared Bat

?, 1777

21

~220

400

1(2)

14.5

30


66

45


Barbastelle bat










-200

1-2

21.5

290


Nathusius’ Pipistrelle**

1935, 1943

6

10

100

2

11


1530

1905


Common Pipistrelle**

1906?, 1908

1935, 1943



5

2

-100

2

16.5

1160


Soprano Pipistrelle**











450

2







Serotine Bat










-300

1

19

330


Northern Bat

?, 1861

31

~210

1200

(1)2

15.5


41

115


Parti-coloured Bat**

1858?, 1861

1935, 1943



3

7

400

2(3)

12


1440

950


Noctule Bat**

?, 1861

4

13

400

1-3

9

1600


Leisler’s Bat**










-200

1-2

9

1245


Total





111

590















Key to Table 1
* first year in the first line = year of first find; second year in the first line = publication of the first find; second line: second find in case the first one was unconfirmed

? unknown

1906? species identification unconfirmed

(1935) the taxonomic status of the species changed after the year of first find and thus it could not be known at the time of finding the earliest confirmed specimen that the specimen represents a separate species according to modern taxonomy

** migratory species that has not been found in Estonia or in neighbouring areas in winter

*** upper figure = in the Estonian population; lower figure = in Europe outside Estonia


Table 2. Overview of the frequency of occurrence and approximate size of the populations of boreal bats in some European countries

(a total of 15 bat species have been found north of 55° northern latitude)




Country



Estonia

Latvia

Lithuania

Finland

Sweden

Norway

Belarus

Hungary

Netherlands

Source

Masing, 2001

Petersons & Vintulis, 1998

Pauzha & Pauzhiene, 1998

EUROBATS report, 2002

Ahlén, 2002, written data

Storkersen, 2000

Kashtalian, Zenina & Babitsky, 2001

EUROBATS report, 2002

EUROBATS report, 2002

Mdas

***

5,000-10,000



***

**




*

100-1,000






**

**

2,500#


**

8,000-10,000



Mdau

****

30,000-50,000



****

****

****

*****

***

****

*****

100,000#


***

15,000-30,000



Mbra

***

10,000-20,000



**

**

****

****

***

*

***

10,000#


*

275-


350

Mmys

**

1,000-3,000



**

*

****?

**

***

**

***

25,000#


**

2,500-4,000



Mnat

**

2,000-5,000



**

***

**

**

1,000-10,000



*

**

***

14,000#


**

1,500-3,000



Paur

****

30,000-50,000



*****

****

****

*****

***

****

***

20,000#


**

4,000-6,000



Bbar



*

**




*

200-1,000



*

**

**

8,000#


?

Pnath

****

20,000-40000



*****

*****

*

*

200-1,000



*

*****

***

10,000#


****

50,000-100,000



Ppip

**

1,000-3,000



***

**




*

?

****

*****

300,000#


*****

300,000-600,000



Ppyg



+

+




*****

***




+




Eser



*

***




**




**

*****

200,000#


****

30,000-50,000



Enil

*****

100,000-300,000



*****

**

****

*****

*****

**

*

20#


*

Vmur

**

1,000-3,000



**

**

*

**

**

**

*

500#


*

50-250


Nnoc

**

2,000-5,000



****

****

*

****

**

*****

*****

400,000#


**

6,000-8,000



Nlei



*

*




*




**

****

30,000#


*

100-500


Total of individuals

202,000-

489,000



















1,162,020#

417,425-

812,100

Total of boreal species

11

15

15

9

15

12

14

15

13

Key to Table 2
Mdas – Pond Bat (Myotis dasycneme)

Mdau – Daubenton’s Bat (Myotis daubentonii)

Mbra – Brandt’s Bat (Myotis brandtii)

Mmys – Whiskered Bat (Myotis mystacinus)

Mnat – Natterer’s Bat (Myotis nattereri)
Paur – Brown Long-eared Bat (Plecotus auritus)

Bbar – Barbastelle Bat (Barbastella barbastellus)

Pnath – Nathusius’ Pipistrelle (Pipistrellus nathusii)

Ppip – Common Pipistrelle (Pipistrellus pipistrellus)

Ppyg – Soprano Pipistrelle (Pipistrellus pygmaeus/mediterraneus)
Eser – Serotine Bat (Eptesicus serotinus)

Enil – Northern Bat (Eptesicus nilssonii)

Vmur – Parti-coloured Bat (Vespertilio murinus)

Nnoc – Noctule Bat (Nyctalus noctula)

Nlei – Leisler’s Bat (Nyctalus leisleri)
Estimated approximate correspondence between the frequency of occurrence and abundance (of bats) extrapolated for an area the size of Estonia
***** very common: more than 100,000 individuals (= abundant)

**** common: 30,000-100,000 individuals (= relatively abundant)

*** locally common: 10,000-30,000 individuals (= relatively scarce)

** rare: 1,000-10,000 individuals (= scarce)

* very rare: up to 1,000 individuals (= scarce, extremely elusive)
****? frequency of occurrence may be overestimated

# estimated size of winter population (number of individuals)

+ has been found, no further data (according to various sources)

? unconfirmed find



Table 3. Frequency of occurrence of bats in roosts of different types

(in Estonia, Latvia and Lithuania)


(consolidated estimates based on a number of sources)


Species


In summer (May-September)

In autumn (October-November)

In winter (December-March)

Biotope


Trees

Buildings

Caves

Cellars

Trees

Buildings

Caves

Cellars

Trees

Buildings

Caves

Cellars

Mdas

**?

***

**




**?

**?

***

**

*?

*?

****

*

Mdau

****

*

**

*

**

*?

****

***

*?

*?

****

**

Mbra

**?

***

*




**?

***?

***

*

*?

***?

***

*

Mmys

**?

**?







**?

**?

*?

*?

*?

**?

*

*

Mnat

**

*?







**?

**?

*

***

*?

**?

*

*

Paur

***

****

*

**

***?

***

***

****

*?

***?

***

****

Bbar

**

*







**?

**?

*

*

**?

**?

*

*

Pnath

***

****







*?

*?







*?

*?







Ppip

*?

**







*?

*?







*?

*?







Ppyg

*?

**?







*?

*?







*?

*?







Eser

*?

**







*?

**

*

*

*?

**

*

*

Enil

**

****

*




***?

***?

***

***

*?

***?

****

****

Vmur

**

***







*?

*?










*?







Nnoc

***

*?







*?

*?



















Nlei

**

*?







*?

*?



































































































Key to Table 3
Mdas – Pond Bat (Myotis dasycneme)

Mdau – Daubenton’s Bat (Myotis daubentonii)

Mbra – Brandt’s Bat (Myotis brandtii)

Mmys – Whiskered Bat (Myotis mystacinus)

Mnat – Natterer’s Bat (Myotis nattereri)
Paur – Brown Long-eared Bat (Plecotus auritus)

Bbar – Barbastelle Bat (Barbastella barbastellus)

Pnath – Nathusius’ Pipistrelle (Pipistrellus nathusii)

Ppip – Common Pipistrelle (Pipistrellus pipistrellus)

Ppyg – Soprano Pipistrelle (Pipistrellus pygmaeus/mediterraneus)
Eser – Serotine Bat (Eptesicus serotinus)

Enil – Northern Bat (Eptesicus nilssonii)

Vmur – Parti-coloured Bat (Vespertilio murinus)

Nnoc – Noctule Bat (Nyctalus noctula)

Nlei – Leisler’s Bat (Nyctalus leisleri)
**** very frequently

*** frequently

** rarely

* very rarely

? supposed, requires specification

  1   2   3


База данных защищена авторским правом ©shkola.of.by 2016
звярнуцца да адміністрацыі

    Галоўная старонка