diff --git a/src/main/java/org/gcube/portlets/user/speciesdiscovery/client/rpc/TaxonomySearchServiceAsync.java b/src/main/java/org/gcube/portlets/user/speciesdiscovery/client/rpc/TaxonomySearchServiceAsync.java
index 104117d..5370679 100644
--- a/src/main/java/org/gcube/portlets/user/speciesdiscovery/client/rpc/TaxonomySearchServiceAsync.java
+++ b/src/main/java/org/gcube/portlets/user/speciesdiscovery/client/rpc/TaxonomySearchServiceAsync.java
@@ -20,7 +20,6 @@ import org.gcube.portlets.user.speciesdiscovery.shared.SaveFileFormat;
 import org.gcube.portlets.user.speciesdiscovery.shared.SearchByQueryParameter;
 import org.gcube.portlets.user.speciesdiscovery.shared.SearchFilters;
 import org.gcube.portlets.user.speciesdiscovery.shared.SearchResult;
-import org.gcube.portlets.user.speciesdiscovery.shared.SearchResultType;
 import org.gcube.portlets.user.speciesdiscovery.shared.SearchStatus;
 import org.gcube.portlets.user.speciesdiscovery.shared.Taxon;
 import org.gcube.portlets.user.speciesdiscovery.shared.TaxonomyRow;
diff --git a/src/main/java/org/gcube/portlets/user/speciesdiscovery/client/window/HelpQueryWindow.java b/src/main/java/org/gcube/portlets/user/speciesdiscovery/client/window/HelpQueryWindow.java
index 4fb171a..c74bff2 100644
--- a/src/main/java/org/gcube/portlets/user/speciesdiscovery/client/window/HelpQueryWindow.java
+++ b/src/main/java/org/gcube/portlets/user/speciesdiscovery/client/window/HelpQueryWindow.java
@@ -8,11 +8,9 @@ import org.gcube.portlets.user.speciesdiscovery.client.resources.Resources;
 
 import com.extjs.gxt.ui.client.Style.HorizontalAlignment;
 import com.extjs.gxt.ui.client.Style.Scroll;
-import com.extjs.gxt.ui.client.store.ListStore;
 import com.extjs.gxt.ui.client.widget.ContentPanel;
 import com.extjs.gxt.ui.client.widget.Dialog;
 import com.extjs.gxt.ui.client.widget.Html;
-import com.extjs.gxt.ui.client.widget.ListView;
 import com.extjs.gxt.ui.client.widget.layout.FitLayout;
 
 /**
diff --git a/src/main/java/org/gcube/portlets/user/speciesdiscovery/server/persistence/DaoSession.java b/src/main/java/org/gcube/portlets/user/speciesdiscovery/server/persistence/DaoSession.java
index e086503..f1440c7 100644
--- a/src/main/java/org/gcube/portlets/user/speciesdiscovery/server/persistence/DaoSession.java
+++ b/src/main/java/org/gcube/portlets/user/speciesdiscovery/server/persistence/DaoSession.java
@@ -17,7 +17,6 @@ import org.gcube.portlets.user.speciesdiscovery.server.persistence.dao.TaxonRowP
 import org.gcube.portlets.user.speciesdiscovery.server.persistence.dao.TaxonomyJobPersistence;
 import org.gcube.portlets.user.speciesdiscovery.server.persistence.dao.TaxonomyRowPersistence;
 import org.gcube.portlets.user.speciesdiscovery.shared.DatabaseServiceException;
-import org.gcube.portlets.user.speciesdiscovery.shared.SearchServiceException;
 
 /**
  * @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
diff --git a/src/main/java/org/gcube/portlets/user/speciesdiscovery/server/persistence/ResultRowBuffer.java b/src/main/java/org/gcube/portlets/user/speciesdiscovery/server/persistence/ResultRowBuffer.java
index c75ad43..a253403 100644
--- a/src/main/java/org/gcube/portlets/user/speciesdiscovery/server/persistence/ResultRowBuffer.java
+++ b/src/main/java/org/gcube/portlets/user/speciesdiscovery/server/persistence/ResultRowBuffer.java
@@ -21,7 +21,6 @@ import org.gcube.portlets.user.speciesdiscovery.server.session.FilterableFetchin
 import org.gcube.portlets.user.speciesdiscovery.shared.MainTaxonomicRankEnum;
 import org.gcube.portlets.user.speciesdiscovery.shared.ResultRow;
 import org.gcube.portlets.user.speciesdiscovery.shared.Taxon;
-import org.gcube.portlets.user.speciesdiscovery.shared.TaxonomyRow;
 import org.gcube.portlets.user.speciesdiscovery.shared.filter.FilterCriteria;
 import org.gcube.portlets.user.speciesdiscovery.shared.filter.ResultFilter;
 import org.gcube.portlets.user.speciesdiscovery.shared.util.NormalizeString;
diff --git a/src/main/java/org/gcube/portlets/user/speciesdiscovery/server/util/StorageUtil.java b/src/main/java/org/gcube/portlets/user/speciesdiscovery/server/util/StorageUtil.java
index ccde54d..e2abe9b 100644
--- a/src/main/java/org/gcube/portlets/user/speciesdiscovery/server/util/StorageUtil.java
+++ b/src/main/java/org/gcube/portlets/user/speciesdiscovery/server/util/StorageUtil.java
@@ -6,13 +6,8 @@ import java.net.MalformedURLException;
 import java.net.URL;
 import java.net.URLConnection;
 
-//import org.gcube.common.core.scope.GCUBEScope;
 import org.gcube.common.core.utils.logging.GCUBELog;
-//import org.gcube.contentmanagement.blobstorage.service.IClient;
 import org.gcube.contentmanager.storageclient.model.protocol.smp.Handler;
-//import org.gcube.contentmanager.storageclient.model.protocol.smp.StringEncrypter;
-//import org.gcube.contentmanager.storageclient.wrapper.AccessType;
-//import org.gcube.contentmanager.storageclient.wrapper.StorageClient;
 
 public class StorageUtil {
 	protected static GCUBELog logger = new GCUBELog(StorageUtil.class);
diff --git a/src/main/java/org/gcube/portlets/user/speciesdiscovery/shared/cluster/ClusterStructuresForTaxonomyRow.java b/src/main/java/org/gcube/portlets/user/speciesdiscovery/shared/cluster/ClusterStructuresForTaxonomyRow.java
index 5d38030..bd28a49 100644
--- a/src/main/java/org/gcube/portlets/user/speciesdiscovery/shared/cluster/ClusterStructuresForTaxonomyRow.java
+++ b/src/main/java/org/gcube/portlets/user/speciesdiscovery/shared/cluster/ClusterStructuresForTaxonomyRow.java
@@ -3,7 +3,6 @@ package org.gcube.portlets.user.speciesdiscovery.shared.cluster;
 import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.HashMap;
-import java.util.List;
 import java.util.Map;
 
 import org.gcube.portlets.user.speciesdiscovery.shared.SearchResult;