Black sea

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+[[!meta title="Changes in appendicularian Oikopleura dioica abundance caused by invasion of alien ctenophores in the Black Sea"]]
+[[!tag Oikopleura]]
+
+Shiganova, T. (2005).
+
+Journal of the Marine Biological Association of the United Kingdom, 85(3), 477-494. doi:10.1017/S0025315405011410
+
+Changes in appendicularian Oikopleura dioica abundance caused by invasion of alien ctenophores in the Black Sea.
+
+[[!doi 10.1017/S0025315405011410 desc="Comparison of _O. dioica_ populations before and after invasion of the ctenophores _Mnemiopsis leidyi_ and _Beroe ovata_.  In 1957, _O. dioica_ peaked in May in the Western Black sea.  In 1979 in peaked from June to November near Sevastopol.  In 1969 there was one peak in May–June and one in August.  In 1991–6, abundance of _O. dioica_ was strongly reduced while _M. leidyi_ was proliferating.  In 1999 and following years, after _B. ovata_ invastion, _M leidyi_ populations were strongly reduced and _O. dioica_ abundance returned to high levels."]]

diff --git a/tags/Oikopleura.mdwn b/tags/Oikopleura.mdwn
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@@ -587,6 +587,10 @@ Ecology
    whether the viruses are digested.
  - Houses and fecal pellets of _Oikopleura_ species are consumed by eel larvae
    ([[Mochioka and Iwamizu, 1996|biblio/10.1007_BF00353257]]).
+ - In the Black Sea, invasion of _O. dioica's predator_ _Mnemiopsis leidyi_ (a
+   ctenophore) decimated its population, which was restored to higher levels by the
+   subsequent invasion of the predator's predator _Beroe ovata_. [[Shiganova,
+   2005|biblio/10.1017_S0025315405011410]].
 
 ### Distribution in and near Japan
 
@@ -670,7 +674,8 @@ Ecology
    ([[Berry and coll., 2019|biblio/30735490]])
  - TARA Oceans ([[Vorobev and coll., 2020|biblio/32205368]]),
    [[Delmont and coll., biblio/10.1101_2020.10.15.341214v2]].
- - In the southern Black sea in 2006–2007 ([[Üstün, Bat and Besiktepe, 2016|biblio/PG_0485]]).
+ - In the southern Black sea in 2006–2007 ([[Üstün, Bat and Besiktepe, 2016|biblio/PG_0485]])
+   and in the northern Black sea ([[Shiganova 2005|biblio/10.1017_S0025315405011410]].
 
 ### In the past: