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UMASS/AMHERST 


J 


3i2Dtt  0271  a?fl^  s  iov  L5197G 


Fi.Ejft/ aild  Wildlife  Existing  in  Limited  Numbers 

in  Massachusetts 


By 


University  of  Massachusetts  Paul  s*  Musford 

Introduction 

Few  subjects  relating  to  fish  and  xjildlife  receive  as  much  publicity  as 
endangered  species.   In  Massachusetts,  as  elsewhere,  considerable  confusion 
persists  also  over  the  frequently-used  words,  "rare"  and  "endangered"  as  well 
as  over  the  selection  of  candidate  fish  or  wildlife  species  for  a  list  of 
those  deserving  special  protection  or  management.   Nominations  of  species  for 
endangered  status  sometimes  are  based  on  emotion  rather  than  on  supportable 
facts.   On  the  other  hand,  some  species  about  which  man  knows  little  may,  in 
fact,  be  threatened  with  extinction. 

Threatened  Species — Where  Does  the  Responsibility  Lie? 

There  is  seemingly  incontrovertible  evidence  that  many  animal  species  have, 
prior  to  the  environmental  degradation  ttributable  to  modern  man,  become  ex- 
:inct.   This  belief  has  given  rise  to  some  speculation  that  negative  environ- 
lental  influences  chargeable  to  man  may  not  bear  the  sole  responsibility  for 
the  decline  of  fish  and  wildlife — that  the  apparent  decline  in  numbers  of  some 
animals  may  be  largely  a  natural  phenomenon.   Then,  too,  some  believe  that  the 
normal  processes  of  extinction  may  be  accelerating  only  for  those  species  which 
are  most  familiar  to  man  (principally  the  larger  animals  which  man  easily 
identifies) ,  and  that  thousands  of  other  living  creatures  (lesser  known)  are 
either  stable  or  expanding  with  no  net  change  in  the  earth's  total  animal  popu- 
lations. 

Evidence  for  Loss  of  Suitable  Habitat 


Host  contemporary  scientists,  however,  feel  that  recent  human  activities 
have  hastened  the  decline  of  certain  plants  and  animals.   The  Smithsonian  In- 
stitute of  Technology,  for  instance,  has  pointed  out  that  more  than  2,000  na- 
tive American  plants,  such  as  cacti  of  the  Southwestern  deserts  and  wildf lowers 
of  the  Rocky  Mountains,  and  many  butterflies  are  approaching  the  endangered 
status. 

The  Wildlife  Society  says  that  of  forty-one  "recent"  native  birds  and 
mammals  of  the  United  States  known  to  have  become  extinct,  eighteen  have  been 
lost  in  the  present  century. 

Such  information  has  stimulated  increased  attention  to  the  status  of 
existing  fish  and  wildlife  resources  as  well  as  to  those  human  activities  which 
may  adversely  affect  our  native  fauna  by  altering  or  eliminating  essential 
habitat. 


f-iqH  a-  w-ndlife  Existing  in  Limited  Numbers  in  Mass. 
Publica?W^93-^0-5So-8-76-CR.  Approved  by  Alfred  C.  Holland,  State  Purchasing 

7^-vo/it.j  A*ent 


-2- 


Present  Status 

Regardless  of  the  legitimacy  of  claims  and  counterclaims,  over  sixty  species 
of  vertebrates  have  been  identified  as  existing  in  limited  numbers  in  Massachu- 
setts.  Some  of  these  are  rare  or  endangered  (see  definitions)  suggesting  a 
cause-and-effect  decline,  while  the  minimal  presence  of  others  may  simply  be 
due  to  recent  range  extensions  into  the  Commonwealth  or  to  a  paucity  of  valid 
information  about  them. 

Those  species  listed  herein  have  been  categorized  because  they  are  declin- 
ing, exist  in  minimal  numbers,  or  have  an  undetermined  status.  Those  in  the 
latter  category  will  require  further  investigation. 

New  Information  Sought 

The  Massachusetts  Division  of  Fisheries  and  Wildlife,  in  its  continuing 
monitoring  of  the  state's  fish  and  wildlife  resources,  welcomes  any  information 
which  will  add  to  the  state  of  current  knowledge.  Submissions  of  data  in  sup- 
port of  proposed  additions  or  amendments  to  the  list  of  those  species  existing 
in  limited  numbers  are  encouraged. 

Contact:  Massachusetts  Division  of  Fisheries  and  Wildlife 
100  Cambridge  Street 
Boston,  Massachusetts  02202 


PSM/mb/1976 


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